HomeMy WebLinkAbout26 - Submissions - SS4A Demonstration Activity - Safety Data Platform (2)From:Jake Kononov
To:Bozeman Procurement; agenda@bozeman.net
Cc:Taylor Lonsdale
Subject:[EXTERNAL]RFP SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY - SAFETY DATA PLATFORM, DiExSys RoadSafety Analytics, Due 2/19/2026 at 3PM MST
Date:Wednesday, February 18, 2026 3:48:17 PM
Attachments:DiExSys_Safety_Data_Platform.pdf
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To the Bozeman Selection Committee.
We are honored to have an opportunity to offer our services in delivering Safety Data
Platform to City of Bozeman.
DiExSys Road Safety Analytics provides a proven safety data and predictive analytics
platform, designed specifically to support data-driven safety decision-making andmeasurable crash reduction. Since 2013, DiExSys has delivered safety engineering and
predictive analytics services in Montana.
Please confirm receipt.
Respectfully submitted,
Jake Kononov, PhD, PE
Jake Kononov, P.E., Ph.D.
Principal
DiExSys, LLC
jake.kononov@diexsys.com
(303) 910-1401
SUBMITTED BYPREPARED FOR
SS4A Comprehensive
Demonstration Activity –
Safety Data Platform
FEBRUARY 2026
1 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
February 18, 2026
Taylor Lonsdale, PE
Transportation Engineer
PO Box 1230
Bozeman, MT 59771-1230
RE: Roadway Safety Management
System RFP 22-002R
Dear Mr Lonsdale and Members of the Selection Committee:
We are honored to have an opportunity to offer our services in
delivering Safety Data Platform to City of Bozeman. DiExSys is
a road safety analytics company. Our expertise is in integrating
the science of road safety, software development, statistical
modeling and quantitative risk analysis with transportation planning,
economics, highway and traffic engineering and GIS in the software
platform. Our principals have made and continue to make significant
scientific contributions to the AASHTO Highway Safety Manual (HSM).
Our engineers and scientists specialize in effectively translating state-of-
the-art safety analysis techniques into applied practical methodology used by
transportation planners, engineers, and law enforcement professionals.
DiExSys is the developer and sole source provider of Vision Zero Suite (VZS) Roadway
Safety Management System, a Highway Safety Manual (HSM) compliant Predictive Crash Analysis Software.
DiExSys VZS provides predictive, diagnostic and analysis tools which reveal the nature and magnitude of the
safety problems on highway segments and at intersections. VZS is designed to be highly intuitive and provides all
components of the effective safety management.
DiExSys Road Safety Analytics has a proven record of successfully delivering
similar Safety Data Platforms and training and technical support 40 times over
the last 8 years.
VZS’s use of the Azure environment provides a solid foundation for monitoring system and subsystem security
health. Azure’s Security Center provides visibility and actionable insights into the security state of servers,
storage, SQL, and networks. VZS offers effective security measures will ensure city of Bozeman's ability to
discharge essential functions in the climate of cyber security threats, provide liability protection, and increase
efficiency and productivity.
COVER LETTER
Our IT partner, Mile High Custom Software, is dedicated to understanding each client’s software needs and
requirements offering design, development, and maintenance of systems using .Net, C#, DotNet Core, Azure,
Xamarin, Power BI, and Power Apps.
We founded our company in 2006 to do one thing: work alongside our clients toward a shared vision of preventing
injury and deaths on our roads. This remains our singular purpose today. Road Safety is both our business and
our passion. VZS harnesses the power of predictive analytics and pattern recognition to produce the augmented
intelligence needed for effective road safety management. DiExSys VZS guides our clients on their journey toward our
shared vison of zero traffic fatalities.
The DiExSys team is committed to delivering Safety Data Platform to the city of Bozeman and related Services in
30 days after notice to proceed. I certify that to the best of my knowledge all of the information submitted with this
proposal is true and complete.
Sincerely,
Jake Kononov, PhD, PE,
DiExSys, President
jake.kononov@diexsys.com,
303-910-1401
DiExSys LLC, 3717 Windchant Cr.
Castle Rock, CO 80104
COVER LETTER
2 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
3 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
Safety Data Platform for City of Bozeman
DiExSys Road Safety Analytics provides a proven safety data and predictive analytics platform, designed
specifically to support data-driven safety decision-making and measurable crash reduction. Since 2013, DiExSys
has delivered safety engineering and predictive analytics services in Montana. During this time, we assisted the
Montana Department of Transportation (MDT) in developing and institutionalizing a data-driven, evidence-based
safety decision-making culture, including the creation of Montana-specific crash prediction models and diagnostic
norms used statewide.
DiExSys is the developer and sole-source provider of the Vision Zero Suite (VZS) predictive analytics platform and
the VZS Smart Dashboard®. VZS is an AASHTO Highway Safety Manual (HSM)-compliant, web-enabled platform
currently deployed and used in: Alabama, Arizona, Arkansas, Australia (VicRoads, Victoria), Colorado, Hawaii,
Iowa, Louisiana, New Mexico, Montana, Oregon, Texas, and
Wyoming. Over the last eight years, DiExSys has delivered
predictive crash analysis software, system integration
services, training, and long-term support to 40 clients.
DiExSys is a road safety analytics company. Unlike typical
Information Technology (IT) firms, big data providers, or general
transportation engineering firms, our core expertise is integrating
the science of road safety with modern IT, statistical modeling,
augmented intelligence (Au-I), GIS, quantitative risk analysis,
highway and traffic engineering, transportation planning,
economics, equity considerations, and human factors. We
specialize in road safety and fill a critical gap between making
predictions and making decisions that lead to measurable crash
reduction. Our team is deeply
familiar with Montana crash and
roadway data and transportation
safety issues through our work
with MDT, including development
of crash prediction models for
segments and intersections,
statewide network screening, and
crash pattern recognition analysis.
VZS provides predictive and
diagnostic decision support for
safety management, planning, and
design. The platform includes tools
for predictive analysis, network screening, before-and-after studies,
and GIS mapping to quantify the nature and magnitude of safety
problems on roadway segments and at intersections. VZS enables
users to evaluate design alternatives from a safety perspective,
EXECUTIVE SUMMARY
Strategic Advantage
for the City of Bozeman
to Deploy DiExSys
Vision Zero Suite
+ DiExSys continuously provided
Road Safety Analytics Services in
Montana since 2013
+ Risk-free Deployment is guaranteed
in 30 Days from NTP
+ Extensive Experience providing
Safety Analytics Support on
SS4A Projects
+ VZS is presently fully integrated
with Montana Crash and Roadway
Databases
+ 40 Similar and Successful
Deployments in 8 years with
extensive experience in Training
and Technical Support
+ Experienced Team of Subject
Matter Experts in Road Safety and
IT professionals
quantify the safety impacts of proposed development, and perform benefit/cost analysis. Designed to be intuitive and
versatile, VZS supports professionals at all experience levels.
While the purpose of this RFP is procurement and deployment of a safety data analysis platform, successful
implementation will also require close coordination with City of Bozeman staff and the consultant selected to develop
the Comprehensive Safety Action Plan under the SS4A program. DiExSys has substantial experience supporting
SS4A planning efforts for cities and counties nationwide using VZS, and this background will support efficient
coordination and successful plan development and implementation.
DiExSys was founded in 2006 with one purpose: to work alongside clients toward preventing serious injuries and
fatalities on roadways. This remains our singular focus today. VZS harnesses predictive analytics and diagnostic
pattern recognition to produce the augmented intelligence needed for effective safety management and to support
the City’s journey toward Vision Zero.
DiExSys partners with Mile High Custom Software (MHCS), a Denver-based firm specializing in software design,
development, and maintenance using .Net, C#, DotNet Core, Azure, Xamarin, Power BI, and Power Apps. In 2021,
MHCS was instrumental in converting VZS to a web-enabled application.
DiExSys has extensive experience integrating AI camera–
generated surrogate safety measures with the predictive
analytics capabilities of the DiExSys Vision Zero Suite
(VZS). Our team routinely works with AI conflict-detection
camera data that captures high-risk events such as near-
misses, red-light running, speeding, crosswalk violations,
crossing on opposing green, intersection blocking, failure
to yield to pedestrians, stopping on railroad tracks,
wrong-way driving, illegal U-turns, stop-bar compliance,
and many other safety-critical behaviors.
Our approach combines the real-world, behavior-based
insights from AI conflict detection cameras with the
diagnostic and predictive safety analytics embedded in
VZS. Together, these capabilities create a comprehensive
and proactive safety analysis framework—one designed to identify risk earlier, prioritize countermeasures more
effectively, and ultimately reduce both the frequency and severity of crashes in Bozeman.
System integration and custom software development projects often involve significant risk, cost, and schedule
uncertainty, with many efforts exceeding budgets and timelines. Hiring DiExSys Road Safety Analytics eliminates
these risks. VZS is already seamlessly integrated with Montana crash, roadway, and traffic databases, and it is
encoded with Montana-specific Safety Performance Functions (SPFs) and diagnostic norms. While it is uncommon
for a platform to be fully integrated and aligned with a client’s safety knowledge base at this stage, DiExSys made
this investment to accelerate safety improvements in Bozeman and support the City’s ability to qualify for additional
federal and state implementation funding.
The only remaining implementation components are development of the Bozeman Linear Referencing System (LRS)
for collector and above roads, crash data cleansing, crash type validation, and creation of unified street naming
convention. This work is expected to take 30 days or less from the Notice to Proceed. With just one day of training
for City engineers, planners, and consultants, VZS–Bozeman will be ready for immediate deployment.
4 COLORADO SPRINGS | ON-CALL ENGINEERING AND ASSOCIATED SERVICES
EXECUTIVE SUMMARY
4 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
FIRM/INDIVIDUAL PROFILE
Firm
DiExSys is a Road Safety Analytics company. Unlike typical Information Technology (IT) firms, big data providers, or
general transportation engineering firms, our core expertise is integrating the science of road safety with modern IT,
statistical modeling, augmented intelligence (Au-I), GIS, quantitative risk analysis, highway and traffic engineering,
transportation planning, economics, equity considerations, and human factors. We specialize in road safety and fill
a critical gap between making predictions and making decisions that lead to measurable crash reduction.
Our team is deeply familiar with crash data and transportation safety issues in Montana from our work with MDT
starting in 2013, including development of crash prediction models for Montana intersections and segments,
statewide network screening, and crash pattern recognition analysis.
DiExSys LLC is Colorado-based international, safety analytics, software development and applied research
consulting firm which focuses on highway safety with laser-like intensity. DiExSys stands for Diagnostic Expert
Systems, designed to provide data driven decision support analysis for safety management. Road safety is our
passion and our business.
DiExSys LLC was originally founded in Colorado by Jake Kononov PhD, PE and Bryan Allery, PE, former employees
of Colorado DOT. DiExSys started providing safety engineering consulting services in Colorado in 2006, since that
time the company has expanded its safety and software practice to State Departments of Transportation, Cities,
Counties and Public Road Authorities in the US, Australia and Europe. Our clients include: E-470 Public Road
Authority, Colorado DOT, Arapahoe, Douglas, Jefferson, Weld and Mesa Counties, Cities of Denver, Aurora, Arvada,
Lakewood, Greeley, Englewood, Louisville and Pikes Peak Area Council of Governments, Alabama DOT, Arizona
DOT, Louisiana DOT, Montana DOT, Wyoming DOT, New Mexico DOT, Oklahoma DOT, Arkansas DOT, Hawaii
DOT, Iowa DOT, Texas, Arizona, New Mexico and VicRoads, Victoria, Australia, Transportation Research Board
(TRB) of the National Academies, Italian Society of Infrastructure Engineers and University of Delft, Holland. DiExSys
partners are coauthors of numerous research papers on road safety published by the Transportation Research
Board (TRB) of the National Academies and have contributed and continue to contribute to the development of the
AASHTO Highway Safety Manual (HSM).
DiExSys is the developer and sole source provider of the Vision Zero Suite (VZS) safety management software. VZS
provides predictive, diagnostic and analysis tools which reveal the nature and magnitude of the safety problems on
highway segments and at intersections. It also provides mapping and cost-effectiveness analysis capabilities for the
evaluation and prioritizing of safety improvement strategies.
We developed the concept of Level of Service of Safety (LOSS), along with diagnostic pattern recognition methods
now used in safety management by MDT, State Departments of Transportation, cities, counties, and consulting
firms across the United States, Canada, and Australia. Our team has also made—and continues to make—
significant scientific contributions to the AASHTO Highway Safety Manual (HSM).
DiExSys has ten (10) full employees and one contract employee. All employees of DiExSys are expert users of VZS
and five are registered Professional Engineers. DiExSys Company address is DiExSys LLC, 3717 Windchant Cr.,
Castle Rock CO 80104.
5 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
6 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
FIRM/INDIVIDUAL PROFILE
Individuals
Jake Kononov, PhD, PE
Jake Kononov, PhD, PE will function as
Project Manager responsible for all aspects of
implementing HSM-compliant VZS Predictive
Crash Analysis Software at Bozeman.
Dr Kononov has successfully managed 40
(forty) similar projects across the US and in Victoria, Australia.
Jake is the founding Principal of DiExSys and is an internationally
known expert in highway safety. His research on Safety Performance Functions (SPF), LOSS and diagnostics has
been incorporated into first and draft second editions of the AASHTO Highway Safety Manual. As a practicing
engineer Dr. Kononov performed thousands of diagnostic examinations using statistical methods starting in 2001.
Jake has over 30 years of experience in all aspects of highway and traffic engineering. As Principal of DiExSys
he has provided Expert Advice, Policy Guidance, and Decision Support analysis on highway safety and traffic
operations related matters to numerous Departments of Transportation, MPOs, Cities and Counties and Public
Road Authorities throughout the US and abroad. Dr. Kononov is an author of numerous research papers on road
safety published by the TRB, Swedish National Road and Transport Institute (VTI), German Road Research Institute
(BAST), Italian Society oh Highway Infrastructure (SIIV) and Public Works Magazine. He is the lead author of Best
Paper of the Year on SPF Modeling awarded by the TRB Committee on Safety Data Analysis and Evaluation. Dr.
Kononov is registered Professional Engineer in Montana, Colorado and Wyoming.
James S. Williams, P.E.
On this project Jim Williams, PE will be
responsible for encoding corrected crash data,
perform SPF modeling and development of
diagnostic norms.
Jim is Senior Safety Analyst and a Partner at DiExSys. He has over 30 years of experience in all
aspects of Transportation Engineering. During his career at DiExSys he developed hundreds of crash prediction
models (SPFs) of segments and intersections for Texas, Victoria, Australia, Colorado, Alabama, Arkansas, New
Mexico, Arizona, Louisiana, Wyoming and Montana. Jim has pioneered new modeling techniques which resulted
in improved goodness of fit in SPF modeling. He has a strong background in predictive analytics and is intimately
familiar with crash records and databases. During his time at CDOT, Jim worked in the staff traffic and cost
estimating unit, where he designed sophisticated databases to provide decision support analysis. In 2021 Jim was
managing conversion of VZS to a web-enable application.
PhD Transportation Engineering, Emphasis
on Highway Safety, University of Colorado
MS Transportation Engineering, University of
Colorado in Denver
BS Civil Engineering, University of Colorado
in Denver
BS Mathematics, University of Colorado,
Boulder, CO
7 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
FIRM/INDIVIDUAL PROFILE
Evan Kirby, GISP
Evan Kirby will be in charge of GIS
applications, crash data corrections,
geocoding, and mapping for this project.
Working with Jim Williams and Jake Kononov,
he worked on GIS mapping and related system integration on VZS deployments in Texas,
Victoria Australia, Colorado, Alabama, Arkansas, New Mexico, Arizona, Louisiana, Wyoming and
Montana. Evan Kirby is a GIS applications, design and development expert with 29 years of professional experience
that joined DiExSys in 2019 as an owner. He is highly skilled in all aspects of ArcGIS and has been supporting
projects with DiExSys in several states over the past 7 years. Evan has managed GIS analyses on a wide array of
CDOT projects, including the Statewide Freight and Passenger Rail Plan, Statewide Transit Plan, Statewide Level
of Service of Safety and Crash Pattern Mapping, the I-70 Mountain Corridor Programmatic EIS, CDOT’s Statewide
Travel Map and the Statewide Effects of Energy Development on the Transportation System Research Study. His
interdisciplinary background in both the public and private sectors provides him with a wide range of GIS expertise.
Evan has worked with DiExSys in several states to develop processes for the creation of GIS datasets from and
data inputs into Vision Zero Suite (VZS). Evan built a linear referencing system integrating roadway geometry,
average daily traffic for the collector-and-above roadway network for the Corpus Christi MPO and developed
methods for correcting crashes coded to highway centerlines at grade separated intersection facilities.
Catherine S. Durso, Ph.D.
Dr. Durso will function as a Principal Statistician
on the project. She is highly experienced
with development of Accident Prediction
Models, Advanced Diagnostic Tools, Variable
Speed Limits (VSL) and Artificial Intelligence
Algorithms. She is also actively involved in
applying statistical analysis to the problems of roadway safety and traffic operations. She has over 20 years of
experience in the area of applied statistics and mathematical modeling with focus on highway safety analytics. Dr.
Durso has coauthored a number of research papers on highway safety with Jake Kononov and Jim Williams.
Richard Sarchet, P.E.
Rich Sarchet, PE will be a Senior Safety
Engineer on the project responsible for
training and safety analysis. Rich is a Senior
Transportation Safety Engineer and a
partner at DiExSys. He has over 20 years of
transportation engineering experience at CDOT,
with 15 of those years focused on safety and traffic operations.
From 2011 through 2015 Rich worked as Region 3 Traffic
Operations Engineer addressing multidisciplinary problems of safety and mobility combining expertise in rural and
urban environment. He has evaluated hundreds of intersections, interchanges freeways and arterial segments and
identified thousands of opportunities for crash reduction and optimization of traffic operations.
PhD & MS – Mathematics, Massachusetts
Institute of Technology (MIT), Cambridge, MA
BS Mathematics, Princeton University,
Princeton, NJ
MS Civil Engineering, Transportation
Focus,University of Colorado, Denver, CO
BS Civil Engineering, University of Colorado,
Denver, CO
BS Business Administration, Management,
University of Northern Colorado, Greeley, CO
BS Geography and Environmental
Conservation, University of Colorado,
Boulder, CO
8 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
FIRM/INDIVIDUAL PROFILE
Ben Kiene, P.E.
Ben Kiene, PE will assist with data validation,
traffic engineering and training in Bozeman.
Ben joined DiExSys as a Senior Traffic Safety
Engineer in November 2023 following 19.5
years with CDOT’s Region 1 Traffic and Safety
office, including 5.5 years as a Resident
Engineer. He was responsible for the management of the Region’s traffic control devices; identification and delivery
of traffic safety and traffic asset management projects; communication with members of the public on traffic
safety and operations topics; and day-to-day operations and monitoring of traffic signal and signing and markings
programs. He advised more than 100 CDOT project teams on the incorporation of safety improvements in his
traffic engineering support roles for the Region’s capital project delivery program and assisted in the development of
statewide safety and pedestrian policies.
Gillian McCarthy, PE, RSP2
Gillian McCarthy will support dataset
preparation, training and quality control.
She is an expert VZS users and is very familiar
with the delivery of FHWA HSIP program from
her work at CDOT. She used VZS based data
driven approach evaluating HSIP applications
from cities and counties in Colorado.
Marcia Rutherford, GIS Technician
Marcia Rutherford, a GIS Technician and will
provide GIS support for the project. She is
very familiar with roadway systems and crash
profiles on state highways and county roads
from her experience with Geocoding crashes,
assigning mileposts and conducting GIS Analysis for Arapahoe and Douglas Counties crash data in Colorado. She
has 3 years of transportation related experience.
Jacob Maes, EIT
Jacob will assist with implementation of
unified street naming convention and preparing
specific examples for training in Bozeman.
Traffic Engineering, operational analysis, capital improvement design, project development, VRU
mobility, data collection, signal timing, optimization of arterial progression, transportation policy
analysis, signal design, concept development, cost estimating, VRU facility planning, ITS, ramp
metering, VSL safety network screening, project identification and scoping, diagnostics, corridor analysis, before
and after studies, crash prediction.
MS Eng. in Civil Engineering University of
Delaware, Aug 2012 (GPA 3.7)
BS Eng. in Structural Engineering, Cork Institute
of Technology (Ireland), Jun 2010 (2:1 Hons)
BA in Music & Italian, University College Cork
(Ireland)
BS, Civil Engineering, Colorado School
of Mines
Classes in Surveying and AUTOCAD at
Arapahoe Community College
GIS Training from ESRI
MS, Civil Engineering, University of
Colorado, Denver
BS, Civil Engineering, Colorado State
University, Fort Collins
9 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
FIRM/INDIVIDUAL PROFILE
Jake Kononov, Ph.D., PE
DiExSys PM
Taylor Lonsdale, PE, Project Manager
Ben Kiene, MS, PE
DiExSys
Jacob Maes, PE
DiExSys
Marcia Ruterford
DiExSys
Evan Kirby, GISP
DiExSys
Milan Thompson
Mile High Custom
Software
Ivan Mora
Mile High Custom
Software
Rich Sarchet, MS, PE
DiExSys
Jim Williams, PE
DiExSys
Gillian McCarthy,
PE, RSP1
DiExSys
Catherine Durso, PhD
DiExSys
Milan Thompson
Milan Thompson with Mile High Custom
Software, is the president of MHCS he will
supervise and manage VZS IT support on Bozeman deployment and provide customization
as needed.
Milan has been with involved in IT architecture, computer coding and caber security field for over
15 years, and specializes in Microsoft technologies, including Azure, web/mobile development, and SQL. His creative
solutions include development of code in C#, SQL, MySQL and .NET for numerous web applications, custom software
packages, and legacy software conversions. Milan brings a wealth of experience in development of machine-to-machine
WebAPIs and tools for data driven applications, including a recent web application with algorithms developed for
optimization of railroad car loadings with sequenced movement of containers in response to real-time changes in location
and prioritization within railyards.
Milan has developed intuitive, data-driven web applications for clients including freight logistics and other transportation-
oriented businesses.
Ivan Mora
Ivan Mora with Mile High Custom Software, has 8+ years of experience .NET, JavaScript and SQL
Server. On this project Ivan will assist with customer support and code customization as needed. He
worked on latest round of VZS enhancements and designed new SPF planning module.Certification:
AWS Certified Cloud Practitioner, Microsoft Azure Developer Associate.
DeVry Technical College, Thornton, CO
10 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
SCOPE OF SERVICES
Scope of Services
The City of Bozeman’s expectations for a Predictive Crash Analysis Software platform were effectively translated
by City staff into the RFP requirements, which provide a clear framework for the development of our proposal.
Currently, City engineering staff must review individual crash reports to identify crash trends. This process requires
significant staff time and has limited the City’s ability to proactively use crash data. The City seeks to implement
a safety data platform that will provide staff with streamlined access to crash information while also delivering
analytical tools that enable proactive use of the data.
Our scope of services will include the following:
• Develop Bozeman Linear Referencing System (LRS)
for collector and above roads, crash data cleansing
and validate crash types. DiExSys uses the ArcGIS
Online JavaScript API within Vision Zero Suite and is
consistent with formatting of spatial data presently
used by the City.
• Create Unified Street Naming Convention. A common
problem in network screening is linked to how streets
names are identified in source crash reports. Roads
that begin or end at intersections will also frequently
have different road names at the opposing legs of the
respective intersection. Misspellings of street names
is also a common problem observed in Montana
crash data. Because intersection network screening
requires consistent identification of crashes by street
names, we will spatially apply a unified street naming
convention to crashes at all intersections, enabling
reliable network screening by street names.
• Vision Zero Suite (VZS) will be delivered fully encoded
with Bozeman crash data extract, including crashes
within the City of Bozeman and crashes occurring
within a buffer zone of 500 feet in neighboring
jurisdictions. The platform will also include Bozeman
roadway and traffic inventory data, along with
Montana-specific predictive and diagnostic tools.
• The platform will be updated periodically throughout
the three-year demonstration project at a frequency
negotiated with City staff.
• The platform will support generation a High Injury
Network (HIN) using Montana-specific Safety
Performance Functions (SPFs), identify and analyze
crash patterns using Montana diagnostic norms, and
identify potential countermeasures. It will include GIS
mapping and Benefit/Cost (B/C) analysis capabilities
and will be able to display GIS layers containing
demographic data.
• VZS will support observational before-and-after
studies to facilitate ongoing monitoring and evaluation
of the safety plan, as required by the SS4A grant.
• We guarantee a significant increase in the
effectiveness and efficiency of project identification
and analysis. Based on our experience in other states,
staff productivity involved with project selection and
analysis typically increases by a factor of five or more
compared to the period prior to VZS deployment.
• Our services will include deployment, training in
safety analytics and software use, data corrections as
needed, and ongoing technical support.
• DiExSys will integrate AI camera–generated surrogate
safety measures with the predictive and diagnostic
analytics capabilities of the DiExSys Vision Zero
Suite (VZS) to support proactive safety management
in Bozeman. This work will incorporate AI conflict-
detection camera data capturing high-risk events and
safety-critical behaviors, including but not limited to:
near-misses, red-light running, speeding, crosswalk
violations, crossing on opposing green, intersection
blocking, failure to yield to pedestrians, stopping on
railroad tracks, wrong-way driving, illegal U-turns,
stop-bar compliance, and other comparable unsafe
operational conditions.
• DiExSys will combine these real-world, behavior-
based insights derived from AI conflict detection
cameras with the predictive and diagnostic
safety analytics embedded within VZS to create
a comprehensive and proactive safety analysis
framework. This integrated approach will be used to
identify risk earlier, prioritize countermeasures more
effectively, and support measurable reductions in both
the frequency and severity of crashes in Bozeman.
11 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Description of Proposed Solution
Transforming data into actionable insights using the VZS Predictive Analytics Platform
The VZS Predictive Analytics Platform offers advanced analysis and visualization capabilities. While the underlying
predictive and diagnostic algorithms are highly sophisticated, the user interface is designed to be intuitive and very
easy to use.
The VZS predictive analytics platform offers:
• Search type capabilities that enable analysis, even without fully geocoded crash data
• Network Screening
• Predictive analysis using Safety Performance Functions (SPF)/Level of Service of Safety (LOSS) analysis
including Directional SPF capability
• Corridor Level SPF profiles with LOSS boundaries
• Diagnostics (direct for intersections and patten recognition for segments)
• Economic Analysis (Crash Reduction Factors (CRF) library, composite CRF, Benefit/Cost (B/C) with
consideration of maintenance cost and cost of reduced congestion)
• Before/After studies with automated correction for regression to the mean bias
• GIS Mapping capabilities and the ability to add custom map layers such as demographics, emergency service
response times, school routes, and others
• Performance Based Design
• Assessment of Safety Impact of Proposed Development
12 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
The VZS Predictive Analytics Platform is equipped with numerous one-click graph capabilities to enhance in-depth
analysis capabilities.
GRAPHIC INTERFACE WITH ONE-CLICK GRAPHS
13 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
The VZS Predictive Analytics Platform library of crash prediction models is encoded with 36 Montana Crash
Prediction Models (SPFs) to enable AASHTO Highway Safety Manual (HSM) compliant predictive analysis and
47 sets of stratified diagnostic norms required to identify patterns in the randomness of crash occurrence using
VZS pattern recognition algorithms. These predictive and diagnostic tools were developed by DiExSys engineers
and scientists and are used for identifying magnitude and nature of safety problems at Montana intersections and
segments.
At intersections, SPFs relate the number of expected crashes per year for a specific intersection type with Annual
Average Daily Traffic (AADT) on the major and minor roads. For road segments, SPFs relate the expected number
of crashes per year over a unit length with segment AADT. Montana-specific SPFs will be used as a frame of
reference for assessing the magnitude of the safety problems in Bozeman. Frequency and severity of crashes
predicted by the SPF are compared with frequency and severity observed at a specific site.
The example below is a conceptual illustration of how SPFs are used to provide a frame of reference in assessing
the magnitude of the safety problem at an individual intersection. The expected total number of crashes was
32 per year based on a statewide sample of intersections of the same type carrying the same amount of traffic,
while the observed number of crashes was 44 per year. Two types of SPFs are used: one for the total number of
crashes, and another for injury and fatal crashes only.
It is important to note that SPFs only provide a frame of reference for the safety performance of an individual
intersection or road segment. The nature of the problem is determined by diagnostic investigation using
direct diagnostic techniques. Crash patterns susceptible to cost-effective correction may exist with or without
overrepresentation in frequency reflected by the SPF.
14 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
15 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Statistically supported and data-driven roadway and intersection improvement project suggestions that
can improve transportation safety
The following example demonstrates how the VZS Predictive Analytics Platform is used to conduct statistically
supported, data-driven analyses for project development, observational before-and-after evaluations, and benefit/
cost analysis before and following project implementation.
The intersection of Durston Rd. and Ferguson Ave. is in portion of the city that has experienced significant
development in recent years. This 2-lane, 4-leg, divided, unsignalized intersection was analyzed using Montana
Crash Predictive Models within the VZS Predictive Analytics Platform. The analysis identified High Potential for
Crash Reduction (LOSS-IV) at this location.
16 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Diagnostic analysis using VZS Predictive Analytics Platform showed patterns of injury and broadside crashes.
VZS provides suggested crash countermeasures for each identified crash pattern. Given the pattern of broadside
injury crashes at this intersection as well as the congested nature of an all-way stop given the traffic levels, a
roundabout was ultimately constructed in 2019.
17 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
VZS’s Planning and Design features enable analysts to estimate the future safety performance of design
alternatives.
At the planning and design stage, VZS allows analysts to apply future traffic projections to quickly predict the future
safety performance of a location (illustrated as Step 1 below). In this case growth in traffic on the major street
from 8,800 to 10,300 vehicles per day in a “no action” scenario would be expected to result in 0.91 injury crashes
per year. National research has established a Crash Reduction Factor (CRF) of 76 percent for converting an
unsignalized intersection to a roundabout. Applying this CRF to the “no action” future condition, illustrated as Step
2, results in an expected future crash performance of 0.22 injury crashes per year.
18 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Visualization SPF Graph Of Before And After Study - Graph (next page) shows what would have happened should
the City have done nothing as traffic volumes increased (0.91 injury crashes/year), and what has happened after
completion of the project in 2020 (0.36 injury crash/mile/year). Construction of a roundabout resulted in a 60%
reduction in injury crashes. This reduction is somewhat less than predicted, however, the CRF used assumes a
baseline condition of two-way rather than all-way stop control.
19 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
BEFORE AFTER
20 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Based on a project cost of $3,500,000 Benefit/Cost analysis shows that the project was cost effective with
resulting B/C Ratio of 1.13:1.
Integration of AI Camera–Generated Surrogate Safety Measures with The
Predictive and Diagnostic Analytics Capabilities of DiExSys Vision Zero Suite
In some cases, root causes of safety problems are not readily apparent or crash data is incomplete or not yet
available. Under those circumstances AI conflict cameras are highly effective in identifying surrogate measures that
can be linked to developing crash reduction strategies.
Our innovative approach combines data-driven insights from AI conflict-detection cameras—such as vehicle
speeds, vehicle volumes, vehicle and pedestrian paths, conflicts (near-misses), red-light running, speeding,
crossing outside crosswalks, crossing on opposing green, intersection blocking, failure to yield to pedestrians,
stopping on railroad tracks, improper merges, illegal U-turns, and near rear-end events—with the predictive and
diagnostic capabilities embedded in DiExSys Vision Zero Suite (VZS).
This comprehensive approach to safety analysis will have a synergistic effect, helping Bozeman reduce both the
frequency and severity of crashes.
21 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
The following example demonstrates how this
has been achieved by the DiExSys team at a
signalized intersection of Astrozon Blvd. and S.
Academy Blvd. in Colorado Springs (pictured
above). While conducting city-wide network
screening, DiExSys identified this intersection as
needing further analysis and incorporated results
of an in-depth conflict analysis using AI cameras.
Using Colorado crash prediction model-based
analysis (below), the DiExSys team identified
this intersection as having high potential for
crash reduction from both frequency and
severity standpoints.
22 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
AI camera analysis identified EB Left-SB Thru and WB Left-NB Thru near-misses and instances of red light running,
which are often correlated with broadsides and elevated severity of crashes.
Near-misses and Instances of Red Light Running
DiExSys validated the findings from AI Cameras showing elevated risk of injury and broadside crashes through
pattern recognition analysis (Table Below), Patterns of broadside, injury crashes as well as impaired driving and
lighting conditions-related crashes were identified
23 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Additionally, AI cameras identified near-misses related to permitted-protected left turn movements in the eastbound
and westbound directions which often correlate with patterns of approach turn crashes.
DiExSys validated AI camera findings by identifying a strong approach turn pattern in the east-west direction only
(18 crashes); northbound left is fully protected.
On the basis of integrating predictive and diagnostic analyses from VZS and the information generated by the
AI cameras, the DiExSys team recommended the following countermeasures:
1.Protected only left turn phasing on Astrozon Blvd
2.Increase in yellow change and all red intervals
3.Intensified police enforcement against drunk driving and red light running
4.Additional lighting on the northeast and southeast corners of the intersection
24 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SOLUTION
Benefit-cost analysis using DiExSys VZS shows that introducing protected only left turn phasing on Astrozon Blvd
is expected to be highly cost-effective.
25 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
MAINTENANCE AND SUPPORT
Maintenance and Support for City Staff
To ensure the successful implementation and ongoing use of VZS and the Smart Dashboard, our highly
experienced staff is ready to provide tailored training, onboarding, and support to City of Bozeman professionals
at all levels, as well as to consultants supporting the SS4A grant. Our team includes engineers and data scientists
with extensive expertise in VZS software, road safety analytics, the Safe System approach, predictive modeling,
traffic operations, and geometric design. If the City chooses to make the Smart Dashboard public-facing, DiExSys
will provide responsive technical support to all users to ensure a seamless and productive
experience.
Technical Support
Following deployment and training, DiExSys will provide technical
support that includes Microsoft Teams working sessions, email,
and telephone-based assistance for users. DiExSys will provide a
dedicated email address and phone number for support requests.
Support will be available Monday through Friday, 8:00 a.m. to
5:00 p.m. MST, with a response time of 30 minutes or less.
Support will begin on the first business day following training.
Issue Response and Resolution Time: Most issues are
expected to be resolved during technical consultations with
Bozeman VZS users. In rare cases, software programming
changes may be required. In those instances, DiExSys will
make commercially reasonable efforts to resolve the issue within
48 hours.
Cybersecurity
VZS is a cloud-based application hosted on Microsoft Azure and
includes modern cybersecurity features to help ensure continuity
of essential functions in today’s evolving threat environment. These
measures support risk reduction, liability protection, and the effectiveness
and productivity of City staff.
Web Content Accessibility
DiExSys takes both IT security and accessibility seriously. Upon request, we can provide a Microsoft Azure
System and Organization Controls (SOC 2) report. In addition, our software has been proactively designed to
support compliance with the Web Content Accessibility Guidelines (WCAG) 2.1 and 2.2 AA, and we can provide a
Voluntary Product Accessibility Template (VPAT) report upon request.
Training of City Staff and Consultants
DiExSys will initially deliver a one-day, in-person VZS training class led by two instructors. The training will cover
not only how to use the VZS software but also provide a methodological foundation and analytical framework—
grounded in the Safe System approach—for explicitly incorporating safety into traffic operations, transportation
planning, roadway design, and targeted enforcement.
City of Bozeman engineers, planners, technicians, consultants, and police officers who attend the course will gain
a comprehensive understanding of key relationships and concepts, including safety and congestion, geometric
design and safety, the safety performance of different roadway types, diagnostics and pattern recognition, benefit/
26 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
MAINTENANCE AND SUPPORT
cost analysis, and optimization strategies. Throughout the course, real-world case studies using Bozeman
intersections and roadway segments will be used to demonstrate how these concepts are applied within VZS.
Training will include the following:
•Explicit Consideration of safety in transportation planning and design
•Problems with using crash rates and how to measure safety
•Montana-specific Safety Performance Functions and Level of Service of Safety
•Vulnerable Road User (VRU) Problem in Bozeman
•How to identify HIN in Bozeman using VZS
•Relationship between safety, congestion and traffic operations
•Diagnostic analysis using Montana-specific Diagnostic Tables
•Overview of DiExSys Vision Zero Suite
•City-wide Network Screening using VZS
•Intersection and Segment Analysis using VZS
•Corridor Level Analysis using VZS
•VRU Analysis using VZS
•Mapping of crashes using VZS
•Benefit/Cost Analysis using VZS
•Safe System Application in Bozeman
After many years of experience, we perfected our teaching methods by paying close attention to students’
feedback and carefully reviewing student’s evaluations after VZS training classes. VZS training class evaluations
now range between 95% and 100% student satisfaction with VZS software and instructions.
27 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
RELATED EXPERIENCE
Related Experience with Projects Similar
to The Scope of Services
DiExSys team has many years of experience working in concert to deliver VZS deployment projects on schedule
and on budget. We have successfully managed 40 deployments of VZS Predictive Crash Analysis Software for
DOTs, MPO, Cities and Counties across the country over the last 8 years.
Typically, Jake Kononov, functions as PM and principal Safety Analyst. Jim Williams, Ben Kiene, Rich Sarchet
and Jacob Maes manage data conversion including locational accuracy of crashes and crash type designation.
Evan Kirby and Marcia Rutherford deal with the GIS aspects of the project as well as issues related to Linear
Referencing System and Unified Street naming Convention. Jim Williams, Dr. Durso and Dr Kononov develop
jurisdiction-specific SPFs and diagnostic tools. Gillian McCarthy performs software testing and quality control.
Milan Thompson and Ivan Mora provide customization services as needed.
We deployed VZS Predictive Crash Analysis Software for the following 40 DOTs, MPO, Cities and Counties:
Source: TRB Transportation Research Record 2318, “Evaluation of Effectiveness of the Federal Highway Safety Improvement
Program” by Kun-Feng Wu, Scott C. Himes, and Martin T. Pietrucha
State DOTs
1. Colorado DOT
2. Louisiana DOT
3. Alabama DOT
4. Arkansas DOT
5. Arizona DOT*
6. New Mexico DOT*
7. Wyoming DOT*
8. Oklahoma DOT*
9. Montana DOT*
10. Texas DOT*
11. Hawaii DOT**
12. Iowa DOT
Counties in Colorado
13. Adams
14. Arapahoe
15. Boulder County
16. Douglas
17. Jefferson
18. Mesa
19. Pueblo
20. Weld
Municipal Planning Organizations in Texas & Colorado
21. Pikes Peak Area Council
of Governments
22. Corpus Christi MPO, TX
23. Pueblo MPO
Cities in Colorado
24. Arvada
25. Aurora
26. Boulder
27. Castle Pines
28. Castle Rock
29. Colorado Springs
30. Denver City and County
31. Englewood
32. Erie
33. Greenwood Village
34. Lakewood
35. Louisville
36. Pueblo
37. Thornton
Counties outside of Colorado
38. Clackamas Co, Oregon
39. Bernalillo Co, New Mexico
Foreign Countries
40. VicRoads (Victoria,
Australia)
* DiExSys used VZS to perform Network
Screening and Diagnostic
** Currently in progess.
Colorado has
achieved by far the
largest reduction
in fatal crashes in
the US following full
implementation of the
methodology developed
by DiExSys principals
on all projects, as
illustrated left.
TRB Transportation Research Record
2318, “Evaluation of Effectiveness
of the Federal Highway Safety
Improvement Program” by Kun-Feng
Wu, Scott C. Himes, and Martin T.
Pietrucha.
28 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
RELATED EXPERIENCE
We recognize that the sole purpose of this RFP is the procurement and deployment of a safety data analysis
platform. At the same time, effective deployment will require close coordination with City of Bozeman staff and the
consultant selected to develop the Comprehensive Safety Action Plan as part of the SS4A program. Our team has
substantial experience supporting SS4A planning efforts for cities and counties across the nation using VZS, and
this background will enhance our ability to coordinate efficiently and contribute to successful plan development
and implementation by the consultant team.
We have recently completed SS4A Comprehensive Action Plan for Corpus Christy MPO, Texas. Its scope of work
is briefly discussed below. DiExSys has completed development of a Safe Streets for All Comprehensive Action
Plan for the Corpus Christi MPO in Texas. Following an extensive network screening process, which included
development of a High Injury Network, Level of Service of Safety (LOSS) and Pattern Recognition Analyses,
DiExSys identified 31 project scopes for intersections and arterial segments. To achieve maximum crash reduction
on proposed safety improvement projects, we used the FHWA’s list of Proven Safety Countermeasures (PSC).
FHWA’s Proven Safety Countermeasures initiative (PSCi) is a collection of countermeasures and strategies effective
in reducing roadway fatalities and serious injuries on our nation’s highways. Transportation agencies are strongly
encouraged to consider widespread implementation of PSCs to accelerate the achievement of local, state, and
national safety goals.
In concert with identifying emphasis areas, whenever possible we considered selected elements of a Safe System
Approach which recognizes that humans will inevitably make mistakes. More specifically, safe speeds and safe
roads elements of the Safe System Approach further informed final project selection.
DiExSys has created a proprietary Project Scoring Criteria that generates a quantitative project priority score. This
score considers three key components: the Benefit/Cost component, the Disadvantaged Population component,
and the Project-Joining component, which considers projects already in development or identified for funding
where safety considerations may be added. From our experience, projects are more likely to be federally funded
for implementation where projects already have an identified state or local funding stream. All of this work was
performed utilizing VSL predictive analytics platform.
Corpus Christi Texas MPO SS4A Action
Plan Safety Project Map
29 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
RELATED EXPERIENCE
We conducted similar work for the Cities of Pueblo, Colorado and Colorado Springs, Colorado. In Colorado Springs
following network screening analysis, diagnostic examination, and stakeholder’s involvement, the study developed
168 safety project scopes at intersections and 73 safety projects on arterial segments in Colorado Springs.
Each location was extensively discussed and evaluated by the Public Works staff, Emergency Medical Services
(EMS) providers, city police, planners from city governments, Colorado State Patrol, CDOT and Federal Highway
Administration (FHWA). Each project site was analyzed to assess the nature and magnitude of the safety problem
using Colorado-specific SPFs, LOSS, and diagnostic tools, followed by the development of countermeasures and
B/C analysis of proposed improvements. All proposed 241 projects meet or exceed CDOT’s requirements
for the HSIP funding and have expected B/C ratios of 2:1 or greater.
The Comprehensive Safety Action Plan (CSAP) for the Pueblo area has been developed to guide efforts to
reduce fatal and serious injury crashes through data-driven and evidence-based strategies. The work was
completed between 11/1/2024 and 8/19/2025. The plan identifies and prioritizes a coordinated program of
projects aimed at improving roadway safety outcomes. It also strengthens the ability of the City of Pueblo and
Pueblo County to compete for federal and state infrastructure funding. Following network screening analysis
and diagnostic examination the study identified and scoped 69 safety improvement projects comprised
of 192 safety-motivated infrastructure and operational recommendations. The work includes 47
intersections and 6 corridors.
Throughout the development of the CSAP, stakeholders and the public were actively engaged through meetings,
workshops, and feedback opportunities to help identify key areas of emphasis and guide the final selection of
projects. This work was also conducted using VZS.
30 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
REFERENCES
Up-to-Date References
Our 8 references are as follows:
1 Patricia Burke, PE
State Safety Engineer, Montana DOT
pburke@mt.gov, 406-444-9420
• Developed Montana-specific crash prediction
models and diagnostic norms for intersections and
segments. Conducted statewide network screening
and pattern recognition analyses. Developed
Montana Roadway Departure Implementation Plan.
2013-Present (6-Contracts)
2 Joe Marek, PE
Director of Safety and Operations
Clackamas Co, Oregon
JoeMar@clackamas.us, 503-742-4705,
503-539-3812
• Developed SPFs, integrated systems
• Deployed VZS
2020-Present
3 Craig T. Casper, AICP
Director of Abilene MPO, Former Director of Planning,
Corpus Christi MPO.
craig.casper@abilenetx.gov, 719-393-2293
• Deployed VZS, Integrated Systems, Developed SPFs
2021-Present
4 Todd Frisbie, PE
Director of Transportation
City of Colorado Springs, CO
Todd.Frisbie@coloradosprings.gov,
719-491-4648, 719-201-1804
• Geocoded crashes, developed SPFs
• Deployed VZS
2019-Present
5 John-Michael Walker, PE
State Traffic Engineer
ALDOT
walkerjoh@dot.state.al.us, 334-313-9391
• Integrated Systems
• Developed SPFs
• Provided training
• Deployed VZS
2018-Present
6 Adnan Qazi, PE
Arkansas State Safety Engineer
adnan.qazi@ardot.gov, 870-395-0203
• Integrated Systems
• Developed SPFs
• Provided training
• Deployed VZS
2023-Present
7 David Swenka, PE
State Safety Engineer, Colorado DOT,
david.swenka@state.co.us, 720 227-1523
• DiExSys deployed VZS and provided maintenance
and support
• Conducted Training
• Developed new SPFs and diagnostic norms
2015-Present
8 Wes Marshall, PhD, PE
Professor and Director of Transportation Institute
University of Colorado
wesley.marshall@ucdenver.edu, 617-678-5069
• Deployed VZS at CU-Denver and conducted training
for 20 Graduate students
2024-Present
31 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SCHEDULE
Schedule and Milestones
In system deployment and consulting, urgent projects are common, so we have extensive experience in responding
to client requests under tight deadlines or fast-tracked projects. Road Safety Analytics is a multidisciplinary field:
It is comprised of quantitative risk analysis, statistical modeling, user interface/user experience design, computer
coding, traffic operations, geometric design, human factors, maintenance, roadside hardware, transportation
planning, GIS, economics, and enforcement. It is possible that, during interaction with Bozeman’s project team,
new issues not presently considered may need to be addressed. The DiExSys team offers in-depth expertise in
all of those fields, and the requisite production capacity to address all of the project needs. Our CPM schedule
identifies the Critical Issues milestones and shows how we plan to complete the work.
YEARS
0 1 2 3
2
Task Description
Bozeman LRS, Data cleanse/validation,
Unified street naming
Training & Deployment
Tech Support, Year 1
Tech Support, Year 2
Tech Support, Year 3
Milestones
1 – Complete Bozeman LRS, Data Cleanse/validation, Unified street naming (30 days)
2 – Complete Deployment and Training / Go Live (1 day)
3 – Complete Tech Support, Year 1
4 – Complete Tech Support, Year 2
5 – Complete Tech Support, Year 3
4
3
5
1
32 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PROPOSED SCHEDULE
Diexsys Management Approach and Quality Assurance and
Quality Control
ACTIVELY LISTENING TO CITY OF BOZEMAN
PM/STAFF PM/STAFF
Our engineers, scientists, code developers and
UI/UX designers always focus on understanding of client’s
expectations and internalize the goals and objectives
reflecting their priorities. Where appropriate, we have found
that an open exchange of ideas with clients helps formulate
and inform a vision of shared desired outcomes that is
carried forward into a final plan.
DEVELOPING INNOVATIVE SOLUTIONS AND
EFFECTIVELY COMMUNICATING THEM TO
THE PROJECT TEAM
DiExSys has the experience, drive, and expertise to create
transportation safety IT solutions that are both innovative and
practical. DiExSys philosophy and culture creates openness
to and preparedness for innovation. It is almost as important
to be able to communicate effectively about the solution as
it is to develop it. We specialize in finding ways to translate
complex concepts into something everyone understands.
QUALITY ASSURANCE AND
QUALITY CONTROL
Decisions made by DiExSys staff often have direct
influence on the safety and mobility of the traveling public.
This influence comes with the responsibility to ensure quality
of our data, analyses, recommendations, software, reports,
plans, specifications, and estimates. DiExSys has instituted a
rigorous internal 5-Step Quality Assurance
(QA) process to ensure that our methods will produce sound
and defensible results. Step-1 Independent Review of all
work for accuracy and completeness, Step-2 Resolution of
Issues between Creator and Reviewer, Step-3 Incorporation
of Changes into reports, models, plans and specs by
Creator, Step-4 Review of Clean Copy by Independent
Reviewer, Step-5 Independent Verification and Certification
that QA process/QC procedures are complete by Company
Quality Manager.
The DiExSys QC procedure usually involves 3-5 individuals
with requisite expertise: Originator, Independent Reviewer (PE
for Engineering and PhD for statistical modeling and data)
and Company Quality Manager (Jake Kononov, PhD,
PE). In addition to the DiExSys Internal 5-Step process,
when developing new methodology not tested before,
we routinely seek and obtain independent peer reviews
from nationally and internationally known experts in the
field or from the Transportation Research Board of the
National Academies.
CONTROLLING COSTS, SCHEDULES
AND TAKING CORRECTIVE ACTIONS
Our approach to controlling costs and
schedules will be informed by accurately reflecting City
of Bozeman vision for the outcome in our proposed
schedule and estimate. Project Manager Jake Kononov
will ensure that requisite resources are allocated to
critical activities to ensure successful execution of the
project on schedule and within budget.
Based on the agreed schedule and budget parameters
DiExSys team will use Crossconcept Continuum®
project management software tools to effectively
monitor progress and costs in the framework of the
overall project schedule
and budget. Its use will
provide the necessary
management insights to stay within project scope and
budget from Notice to Proceed to completion of SPF
development and VZS deployment.
Crash data quality and availability are always the biggest
challenge and source of uncertainty in completing road
safety projects on schedule and within budget. This
problem, however, has been anticipated and pro-
actively addressed.
Our extensive experience with delivery of similar
projects on schedule and within budget enables us
to anticipate problems and plan accordingly, rather
than being reactive in our project management
approach. If project delivery problems occur, we
will likely have encountered them before and have a
solution ready for implementation.
33 CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
PRICE PROPOSAL
Price Proposal
Bozeman LRS development, data cleanse, unified street naming ...........$0.00
Initial training in person (2 instructors) 8 hrs.............................$0.00
Training of new Bozeman Employees-virtual (as needed) . . . . . . . . . . . . . . . . . .$0.00
Technical Support and Data Upload Year 1 ............................$0.00
Technical Support and Data Upload Year 2 ............................$0.00
Technical Support and Data Upload Year 3 ............................$0.00
VZS Site License over 3 Year Period............................$144,000.00
TOTAL ..................................................$144,000.00
Road safety is both our passion and our business, and we are inspired by the City’s commitment to safety—
demonstrated by your response to the tragic loss of two community members and your establishment of a clear
vision and goals to eliminate serious injury and death. We would be honored to help Bozeman advance and achieve
this inspirational goal, and we view this RFP as an opportunity to support the City in making measurable progress.
The City of Boulder, Colorado—also a college town and a Vision Zero Suite user with a population of approximately
108,000—has demonstrated that meaningful progress toward this goal is achievable, with 0 fatal crashes in 2017,
1 fatal crash in 2021, and 1 fatal crash in 2025.
Respectfully submitted
Jake Kononov, PhD, PE
DiExSys President
CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
APPENDIX
Attachment A
NONDISCRIMINATION AND EQUAL PAY AFFIRMATION
DiExSys LLC hereby affirms it will not discriminate on the basis of race, color, religion, creed,
sex, age, marital status, national origin, or because of actual or perceived sexual orientation,
gender identity or disability and acknowledges and understands the eventual contract will
contain a provision prohibiting discrimination as described above and this prohibition on
discrimination shall apply to the hiring and treatments or proposer’s employees and to all
subcontracts.
In addition, DiExSys LLC hereby affirms it will abide by the Equal Pay Act of 1963 and Section
39-3-104, MCA (the Montana Equal Pay Act), and has visited the State of Montana Equal Pay
for Equal Work “best practices” website, https://equalpay.mt.gov/BestPractices/Employers,
or equivalent “best practices publication and has read the material.
Jake Kononov, President
Name and title of person authorized to sign on behalf of submitter
CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
APPENDIX
No changes proposed to Attachment B.
CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
APPENDIX
Attachment C - City of Bozeman Cloud Services Ques�onnaire
1)Service Levels: What level of service should we expect? What is the City’s recourse for
excessive down�me? Refund of percentage of monthly fee?
VZS is hosted in Microso� Azure and is designed for high availability. Over the past three
years of produc�on use, VZS has experienced only one slowdown event las�ng
approximately one hour, with no extended outages. DiExSys will provide a target service
availability of 99.9% up�me and refund a propor�onal percentage of monthly fee for
down�me events to the City of Bozeman.
2)Data Ownership: Who owns the data we provide and what can be done with the data?
Source crash data and linear referencing informa�on is in the public domain through
MDT. So�ware and algorithms are the property of DiExSys, LLC. Any reports, datasets or
analyses generated from the use of VZS will be the property of the City of Bozeman.
3)ADA Compliance: If your proposed services include websites, they must be AA
compliant as defined by WCAG (Web Content Accessibility Guidelines) standards.
VZS complies with Web Content Accessibility Guidelines (WCAG) 2.1 and 2.2 AA, and we
can provide a Voluntary Product Accessibility Template (VPAT) report upon request.
4)Data Security: How secure is our data and how is it being kept secure?
a.If this is a mul�-tenant environment on the same hardware how is our data kept
separate and secure from other customers, including any PII (Personally Iden�fiable
Informa�on) that may be gathered?
No PII will be gathered as part of this deployment. In our so�ware, user
management and RBAC is handled through Microso� Entra ID. Network/in-mo�on
data in VZS is protected through SSL and Azure Firewall. VZS uses MS Azure's SQL
database, which has at-rest encryp�on and network access to the database is
restricted by default. The VZS web applica�on is built on .NET 5.0 with built-in
protec�ons against cross-site scrip�ng, SQL injec�on, and open redirect.
b.If PII is gathered, is it encrypted in transit and at rest?
No PII will be gathered or included in VZS.
c.If credit card transac�ons are occurring is your system fully PCI compliant?
No credit card transac�ons will occur in VZS.
CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
APPENDIX
5)Data Integrity: What do you do as a vendor to ensure our data maintains its integrity?
DiExSys conducts data cleanse to iden�fy and correct errors, implements unified street
naming conven�on, validates crash type designa�ons and data quality tes�ng to ensure
data integrity and relevance.
6)We require data centers to be located in the United States: What country will our data
be located in?
The MS Azure Data Center hos�ng VZS is located in California, with backups in
Washington State, USA. No data will be located outside of the United States.
7)Responding to legal demands to disclose data: What is your process when someone
subpoenas or requests our data from you as a vendor?
DiExSys treats all City data hosted in Vision Zero Suite as confiden�al and will not
voluntarily disclose it to any third party. If DiExSys receives a subpoena, court order,
public records request, or other legal demand seeking City data, our process is:
1.Immediate no�fica�on. We promptly no�fy the City’s designated point of contact
and/or City Atorney (unless prohibited by law) and provide a copy of the request.
2.City-controlled response. We do not produce City data unless authorized in wri�ng by
the City or legally compelled a�er the City has had a reasonable opportunity to respond,
object, or seek a protec�ve order.
3.Narrow disclosure only if required. If disclosure is required, we limit produc�on to the
minimum data legally required, apply appropriate protec�ons (e.g., protec�ve order),
and document what was produced.
4.No PII by design. The pla�orm is configured such that City-provided content generally
contains no personally iden�fiable informa�on (PII), reducing privacy and disclosure risk.
5.Legal protec�ons. To the extent applicable, safety analysis data and related materials
are protected under 23 U.S.C. § 409, and DiExSys will support the City in asser�ng such
protec�ons through the City’s counsel.
8)Repor�ng: What is your protocol for data breaches?
VZS is hosted in Microso� Azure and benefits from Azure’s enterprise-grade security
controls and monitoring. VZS does not store PII or confiden�al personal data. If DiExSys
becomes aware of a suspected or confirmed security incident, we will promptly
inves�gate and contain the issue, preserve logs, and no�fy the City as soon as
prac�cable.
9)Disaster Recovery: What protec�ons/protocols do you have in place to mi�gate
disasters?
VZS’s use of the Azure environment provides a solid founda�on for monitoring system
and subsystem security health. AZURE’s Security Center provides visibility and ac�onable
CITY OF BOZEMAN | SS4A COMPREHENSIVE DEMONSTRATION ACTIVITY – SAFETY DATA PLATFORM
APPENDIX
02/16/2026
Jake Kononov
insights into the security state of servers, storage, SQL, and networks. VZS offers
effec�ve security measures that will ensure Bozeman’s ability to discharge essen�al
func�ons in the climate of cyber security threats, provide liability protec�on, and
increase efficiency and produc�vity. Backups are performed automa�cally daily and
retrieval within Azure is processed quickly.
10)Business Con�nuity/Exit: If you decide to bring your business to an end or we end our
rela�onship what happens to our data? If you give us a copy of our data, what format
op�ons will there be for our data and what assistance will you provide ge�ng our data
to us?
Under any circumstances, DiExSys will ensure the City’s con�nued access to VZS and all
City data through the end of the contract term. Upon request at any �me—and in all
cases upon termina�on—DiExSys will provide the City a complete export of its data in
commonly used formats (e.g., Excel/CSV/ESRI Geodatabase). DiExSys will provide
reasonable assistance to deliver the export and support the City’s transi�on and will
retain City data for an agreed period to ensure successful transfer before secure
dele�on.
11)Termina�on rights and consequences: What is your termina�on policy both for you as a
vendor and us as a customer?
Either party may terminate the agreement with 30 days’ writen no�ce. Upon
termina�on, the City will retain access through the termina�on date, and DiExSys will
provide a complete export of City data in CSV/Excel format upon request.
Ques�onnaire Completed by:____________________________ Date:_________________