TRB
KIMLEY-HORN SPEAKERS, PRESENTERS, AND FACILITATORS
- JUNE 8-12, 2025 | ATLANTA, GA
2025 TRB 7th International Conference on Roundabouts and Geometric Design
KIMLEY-HORN SPEAKERS, PRESENTERS, AND FACILITATORS
MODERATOR
Grass-roots Municipal Roundabout Programs after 15 years
June 9 | 10:15am – 12:00pm
City’s like Hilliard, Ohio and Carmel, Indiana have applied roundabouts as an intersection control in a programmatic way, upholding sound policy, continuous public outreach and reconnaissance to gather feedback from built designs and the public who use them. In this panel session, they will present the history of their use of roundabouts for the past 15 years, the highs and lows, challenges and successes.
SESSION
Importance of Innovative Intersection Project Support
June 9 | 10:15am – 12:00pm
In late 2023, TxDOT launched its Innovative Intersection program, providing District Review services to its 25 districts. Over 50 reviews have been completed, assessing projects from single intersections to corridors with multiple evaluations. The program ensures quality and compliance via standardized procedures and a comprehensive dashboard for tracking assignments, budgets, and milestones. PowerBI helps analyze data from nearly 900 intersections. Direct coordination with engineers expedites reviews, and TxDOT’s successful approach offers valuable tools and strategies for other agencies looking to establish or enhance peer review processes.
SESSION
Building Knowledge: Training and Tools for TxDOT’s Intersection Innovation
June 9 | 10:15am – 12:00pm
The Texas Department of Transportation (TxDOT) is subdivided into 25 geographic districts and 34 divisions, staffed by 12,000 employees. To introduce innovative intersection designs, TxDOT formed the Roundabout and Alternative Intersection Group. Our goals included creating Texas-specific design manuals, developing formal classes, and establishing a champion program for all districts. A task force of engineers, planners, landscape architects, and stakeholders was established, complemented by consultants to provide technical expertise. This multifaceted approach aims to facilitate the adoption of these concepts, ultimately saving lives across the state.
SESSION
Roundabout Exit Crossing Safety
June 10 | 8:00am – 9:45am
This presentation forms a problem statement to study the need and justification for a new national guideline parameter for roundabout exit crosswalk sight distance design checks. This presentation couples two issues to demonstrate the need for more research on exit crosswalk visibility. Specifically, the ability of a pedestrian crossing from the splitter island to the outside of the roundabout needs to be able to see and judge gaps in through traffic. Current design guidance does not address this design check from the pedestrian perspective. Moreover, this presentation articulates the issue that curved roundabout exit legs combined with central island landscaping pose an issue for exit crosswalk sight.
MODERATOR
DOT Panel - Innovative Intersection Program Success Factors - A Decade Later
June 10 | 8:00am – 9:45am
In 2011, the Georgia DOT initiated a survey involving eleven state transportation agencies to assess practices concerning innovative intersections. The survey revealed key success factors emphasized by Georgia DOT, including: advocating for roundabout acceptance through statewide campaigns; evaluating alternative intersection solutions; ensuring engineer qualification and competency; implementing a peer review program; prioritizing Intersection Control Evaluation (ICE) processes; providing specific design guidance; and conducting statewide intersection safety screenings to identify and address high-risk areas with innovative solutions.
SESSION
Using Physics to Identify Potential for FI Crashes at Roundabouts
June 10 | 8:00am – 9:45am
This presentation explores how different roundabout configurations impact safety by examining navigation speeds and collision angles. It compares the safety of single-lane vs. multilane, offset-left vs. turbo, and mini-roundabouts vs. neighborhood traffic circles. Roundabouts typically result in fewer fatal and injury crashes due to their design. The presentation also discusses the potential challenges of implementing emerging innovative roundabout designs by analyzing crash energy vectors for various configurations.
SESSION
Use Cases for Video Analytics of Roundabouts
June 10 |10:15am – 12pm
The traditional evaluation of roundabouts using crash data and observer judgement is imprecise. Mark Lenters, a pioneer in user detection analytics for modern roundabouts, employs drone video and AI software to enhance evaluation methods. This includes calibrating roundabout capacity models, using Surrogate Safety Assessment Models (SSAM) to assess user conflict patterns for safety improvements, and conducting safety audits. Case studies demonstrate the benefits of minor modifications using video analytics. The presentation explores these innovative approaches through visual and narrative descriptions, emphasizing real-world applications and benefits.
Geometric video theater
How Vehicle Kinematics Derived from Drone Video are Used to Analyze Roundabout Performance, Mitigations, and Best Practices for Multilane Roundabout Design
June 11 | 10:15am – 11:00am
This analysis of driver behavior at several roundabouts using drone video-based vehicle kinematics to propose and implement evidence-based countermeasures to alleviate crashes. The video will demonstrate driver behavior characteristics, including path and speed trends, at multilane roundabouts. The video is intended spark conversation by using roundabouts with a range of circulating roadway striping techniques that will serve as the backdrop for the comparison of driving behavior.
PAST EVENTS
2025 TRB Annual Meeting
Kimley-Horn Presenters
Tim Burrows, CITIPR, RSP
The Safe System Approach in Action: Building Relationships to Address Impaired Driving
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Michael Garau, PE
Community Engagement: Who’s on First?
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John Karachepone, PE
Applications Subcommittee
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Michael Garau, PE
Data and Dollars: Crafting a Compelling Story About Asset Management
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Douglas Gettman, Ph.D.
The State of Transit Signal Priority (TSP): What Are the Successes and Challenges for TSP Implementations?
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Meredith Krebs
Road Ecology: Bees, Butterflies, Fish, and Planning for Wildlife Connectivity
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Ali Zalghout
Invitations in Pavement Condition Evaluation
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Ali Zalghout Connect on LinkedIn | Send an Email
Jalen Rich, EIT Connect on LinkedIn | Send an Email
Connor Evanski, EIT Connect on LinkedIn | Send an Email
Tim Miller, PE Connect on LinkedIn | Send an Email
Nick Mazzenga, PE Connect on LinkedIn | Send an Email
Pavement Maintenance Lectern Session
Aaron Heustess, PE, RSP1
Highway Noise Research
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Jared Calise, EIT
Roundabouts and Intersection Safety, Design, and Operational Noteworthy Practices
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Meredith Krebs
Innovative Ecology and National Environmental Policy Act Strategies
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Jeremy Griffith
Thomas B. Deen Distinguished Lecture
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Dan Malsom, PE, RSP1
Shaping the Future of Transportation: Career Insights and Strategies from Emerging Leaders
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Tim Miller
Pavement Condition Evaluation, Part 1: Innovative Technologies
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Lance Ballard, PE
Managing Storm Response and Resiliency for Austin’s Transportation Network
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Meredith Krebs
Modernizing the National Environmental Policy Act: Innovation and Tools
Environmental Analysis and Ecology Committee
Rev It Up: Equipping Transportation Managers for Pollinator Conservation Agreement
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2024 TRB Symposium on Managed Lanes
Kimley-Horn Presenters
Raj Paradkar, PE, PTOE
Using Part-Time Shoulder Lanes as Express Tolled Managed Lanes
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2024 TRB CATE
Kimley-Horn Presenters
Krae Stieffenhofer, PE
Session: Implementation of an Equity Measure in Capital Prioritization
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2024 TRB Annual Meeting
Kimley-Horn Presenters
John Karachepone, PE
Committee Chair: Applications Subcommittee Send an Email
Lance Ballard, PE
Session: Data Infused Workflows for TMCs
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Raul Pineda-Mendez
Poster Session: Effectiveness of Speed Reduction Treatments on Rural-to-Urban Freeway Transition Zones
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Pam Keidel-Adams
Session: A Retrospective Analysis in Aviation Pandemic Relief Programs
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Aaron Heustess, PE
Committee Chair: Highway Noise and Vibration Subcommittee
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Meridith Krebs
Session: Wildlife Connectivity and Reduction of Wildlife-Vehicle Collisions
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Raul Pineda-Mendez
Session: Safety Performance of Indiana Barrier End Treatments – In-Service Evaluation Results
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Mark Lenters, PE
Session: Roundabout Education Outreach, and Videos
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Danielle McCray, PE
Session: Outcome-Based Equity Analysis for Sidewalk and Trail Programming
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Meridith Krebs
Session: Environmental Analysis and Ecology Topics
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Meridith Krebs
Session: Considering Cumulative Effects and Environmental Justice in the National Environmental Policy Act Process
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Meridith Krebs
Committee Chair: Environmental Analysis and Ecology Committee
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2023 TRB Annual Meeting
Kimley-Horn Presenters
Lisa Burgess, PMP
Workshop Moderator: Framing Traffic Management Systems Strategic Direction Improvements Connect on LinkedIn | Send an Email
Michael Garau, PE & Aaron Heustess, PE, RSP1
Workshop Moderator and Speaker: What Is All of the Noise About?: The Intersection of Noise and Public Engagement
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Meredith Krebs
Session Presenter: The National Environmental Policy Act Is Not the Problem and Current and Emerging Topics in Environmental Analysis and Ecology
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Alainie Sawtelle, EIT
Poster Session: Severity of Lane Departure Crashes in Maine: Examining the Impact of Driver, Roadway, and Weather Factors
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Catherine Sydnor, PE
Poster Session: Roundabout Education, Outreach, and Videos
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Sami Lau, EIT & Mason Shoaf, EIT
Speaker: Evaluating Signal Preemption Requests in Utah Using V2X DSRC Equipped Snowplows
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2022 Tools of the Trade
Kimley-Horn Presenters
Dan Malsom, PE, RSP
A4: Weather / Resiliency, Part 1 Monterey County
CONCURRENT SESSION B7: Traffic Safety Partnerships Workshop
CONCURRENT SESSION B8: Traffic Safety Planning
TRB Roundabouts
Kimley-Horn Presenters
Sean Houck, PE
Boronda Road Roundabout Corridor ICE
CONCURRENT SESSION 1A – Roundabout Communities | Regional Roundabout Study: The Growth of Roundabouts in Monterey County
CONCURRENT SESSION 3B – Transit and Trucks | Roundabout Corridor with Transit Priority
CONCURRENT SESSION 3B – Transit and Trucks | Roundabout Corridor with Transit Priority
CONCURRENT SESSION 9C – Roundabouts in the Ground | Bardin Road Safe Routes to School Project
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Catherine Sydnor, PE
CONCURRENT SESSION 3C – Roundabout Support | Chief of Police and Fire Chief Roundabout Testimonials, Version 2.0
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2022 TRB Annual Meeting
Kimley-Horn Presenters
Lisa Burgess, PMP
Workshop Moderator and Speaker: Assessing Performance, Capabilities, and Support for Traffic Management Systems
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Jacob Farnsworth, PE, RSP1
Workshop Moderator and Speaker: Assessing Performance, Capabilities, and Support for Traffic Management Systems
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Christopher Lira, EIT
Poster Session Presenter: Express Lane Sentiment: Are Express Lanes Meeting the Public’s Expectations?
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Emily Grenzke, MIAM
Speaker: Embracing the Triple Bottom Line: Incorporating Social Equity and Environmental Sustainability into Your Asset Management Program
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Timothy Miller, PE
Poster Session Moderator: Innovations in Pavement Condition Evaluation
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Michael Garau, PE
Speaker: Historically Speaking: Engagement and Communications in the Context of Cultural and Historic Resources
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2021 TRB Annual Meeting
Kimley-Horn Presenters
Doug Gettman, Ph.D.
Workshop: Managing Traffic Management Systems (TMS) Assets and Resources
Lectern Session: Artificial Intelligence in Signal Timing Applications, Tee-Up the Session: AI or Not, Owners Just Want Their Timings Up-to-Date
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Lisa Burgess
Workshop: Managing Traffic Management Systems (TMS) Assets and Resources
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Jacob Farnsworth
Workshop: Safety Performance Decision Making: Advancing Research Through Implementation
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Carlye Lide
Poster Presenter: The Disconnect Between the Practice’s and Community’s View on Transportation Performance
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Dhruva Lahon
Poster Presenter: Case Studies in Performance Based Analysis of Geometric Design, Performance-Based Analysis for Safety Plan and HSIP Project Prioritization
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2020 TRB Annual Meeting
Kimley-Horn Presenters
Zach DeVeau
Lectern Session Presenter: Sustainability Means What to Your Organization?
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Doug Gettman
Lectern Session Presenter: TRB Research on Automated and Connected Vehicle Technologies
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Stacie Phillips
Lectern Session Presenter: Reversing the Superstreet: Flexibility to Innovative Intersection Control
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Nick Jehn
Poster Presenter: Uninterrupted Flow
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Kathy Keegan
Poster Presenter: Pavement Monitoring: Looking to the Future
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Cristina Pastore and Beth Tucker
Poster Presenter: Policy, Politics, and Engagement in Public Transportation
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Alex Weber
Poster Presenter: Innovations in Arterial and Network Traffic Signal Optimization
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Lisa Burgess
Workshop Presenter: What Do Agencies Need to Assess, Plan, and Develop the Next Generation of Traffic Management Systems?
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2019 TRB Annual Meeting
Kimley-Horn Presenters
Doug Gettman
Examples of Decision Support Systems Used by Traffic Management Systems and TMCs to Actively Manage Traffic
Decision Support Subsystem to Automate Updates to Adaptive Timing Signal Timing Plans
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Lynn Laquinta
Rail Transit Structures: Managing Structures in LRT Mega Projects
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John Kissinger
Righting the Wrong-Way Driver: Generating Mitigration Measures for Wrong-Way Freeway Collisions
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Lucy Richardson
Critical Traffic Signal System Performance Measures to Monitor During Construction
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