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Conference Presentations

 

 

CONFERENCE PROGRAM

 

Sunday, May 15, 2022 

3–6 p.m Registration Open (De Anza Ballroom Foyer, Portola Hotel)

 


Monday, May 16, 2022 

7:30 a.m.–5 p.m Registration Open (De Anza Ballroom Foyer, Portola Hotel)
7:30–8 a.m. Continental Breakfast (De Anza Ballroom I, Portola Hotel)
8–9:15 a.m.

Opening Plenary Session (De Anza Ballroom II & III, Portola Hotel)

Moderator: Tim Gubbins, Caltrans District 5 Director

Opening Remarks and Introductions 

  • Brian Walsh, Chair,  Roundabout and Other Intersection Design and Control Strategies Committee (AKD80)

Welcome to the California Coast

  • Clyde Roberson, Mayor of City of Monterey, CA   

Welcome and Presentation from Caltrans (California Dept of Transportation)

  • Tim Gubbins,  Caltrans District 5 Director
9:15–9:45 a.m.

Break & Poster Session-1    (De Anza Ballroom I, Portola Hotel)

Going ‘Round – Introducing Roundabouts to Oklahoma

  • Jessica Gay, CP&Y, Inc.

#RoundaboutsWeek

  • Hillary Isebrands, Federal Highway Administration

Planning and Operation of Twin Roundabout Introduced at IC Section of Automobile Expressway

  •  Hiroshi Kobayashi, National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure, Transportation and Tourism

Status of Roundabouts in North America

  • Lee Rodegerdts, Kittelson & Associates,Inc. 

Analysis of secular changes in driving behavior after the introduction of roundabout in Japan

  • Keisuke Yoshioka, Nihon University

Boronda Road Roundabout Corridor ICE

  • Sean Houck, Kimley-Horn and Associates

Caltrans Roundabouts

  • Gina Lopez, Caltrans
9:45 a.m. CONCURRENT SESSIONS 1A, 1B & 1C
11:30 a.m.
(105 min.)

Session 1A - Roundabout Communities   (Steinbeck I, Monterey Conference Center)

Moderator: Rich Deal, Retired Transportation Agency for Monterey County
 

Wisconsin’s Statewide Experience in Roundabout Safety Performance and Development of Safety Performance Functions

  •  Amanda DeAmico, MSA Professional Services, Inc.

Evaluation of Louisiana's Roundabouts

  •  Julius Codjoe, Louisiana Department of Transportation and Development

Washington State Roundabout Evolution

  • Brian Walsh, WSDOT

Regional Roundabout Study: The Growth of Roundabouts in Monterey County

  • Sean Houck, Kimley-Horn and Associates


Session 1B - Mini/Compact Roundabouts     (Spotlight Session) (Serra I, Monterey Conference Center)

Moderator: Chris Tiesler, Kittleson Associates Inc. 
 

Small Footprint, Big Impact - Compact and Mini Roundabouts in Newark, Ohio

  • Nicholas Shultz, City of Newark
  • Aaron Call, OHM Advisors
  • Sean Oatman, OHM Advisors

Compact roundabouts as a solution for semi-rural two-way stop-controlled intersections with high crash severity

  • Steven Diebol, Concord Engineering

Odd Shapes at Rounadabouts 

  • Rachel Price, Roundabotix

Prefabricated Mini-Roundabouts in Downtown Sundre, Alberta

  • Phil Weber, CIMA+

 

Session 1C - Roundabout Planning (Serra II, Monterey Conference Center)

 Moderator: Mike Mastaglo, Urban Engineers

An Extension of the HCM Edition 6 Roundabout Capacity Model

  • Mark Besley, Sidra Solutions

Getting Roundabouts on the Ground: a Case Study in Funding Local Roundabouts

  • Matthew Enders, Washington State DOT

Traffic Planning with Roundabout Corridors: Performance-based Methodology to Maximize Benefits and Cost Ratios

  • Mark Johnson, MTJ Roundabout Engineering

Lessons Learned from ICE

  • Gina Lopez, Caltrans
11:30 a.m.–1 p.m.  Lunch (De Anza Ballroom II & III, Portola Hotel)
1–2:45 p.m.
(105 min.)





 

CONCURRENT SESSIONS 2A, 2B & 2C

Session 2A - Roundabout Corridor Examples    (Steinbeck I, Monterey Conference Center)

Moderator: Jeff Jones, Six Mile Engineering

Massillon Road Corridor – Roundabouts Lead to Total Transformation

  • Paul Pickett, City of Green
  • Steve Thieken, Burgess & Niple Inc.

Roundabouts in a Row

  • Phil Rust, City of San Diego

Going in Circles: The Challenges of Calibrating Five Multi-Lane Roundabouts

  •  Amanda Deering, DKS Associates
  • Randy Johnson, DKS Associates

Evaluation of Route 160 Widening Project: A Before-And-After Study with Driving Simulator

  • Andrew Schlichting, Crawford, Murphy, & Tilly 

 

Session 2B - Mini/Compact RBs    (Serra I, Monterey Conference Center)

Moderator: Howard McCullough, NE Roundabouts

Mini/Compact Roundabout Success & Lessons Learned after a Decade

  • Michael McBride, American Structure Point
  • Jeremy Kashman, City of Carmel, Indiana

Field Evaluation of North America's Largest Modular Mini-Roundabout

  • Wei Zhang, Federal Highway Administration

Recycled Plastic Modular Roundabout System - 2 Year Status

  • Adam Lanik, ZKxKZ

Systemic Safety with Compact Roundabouts

  • Dina Swires, Washington State DOT

 

Session 2C - Transit and Trucks    (Serra II, Monterey Conference Center)

Moderator: Brian Walsh, WSDOT
 

WB-67 U-turns in Kent, WA

  • Victor Salemann, Transportation Solutions, Inc
  • Michelle Mach, Transportation Solutions Inc. 

Roundabout Corridor with Transit Priority

  • Sean Houck, Kimley-Horn and Associates

85th Transit I-405 Interchange Design

  • Diana Giraldo,HNTB
  • Josh Johnson,HDR
  • David Gerla,HNTB
2:45–3:15 p.m. Break with Posters still Available (De Anza Ballroom I, Portola Hotel)
3:15–4:45 p.m
(90 min.)

CONCURRENT SESSIONS 3A, 3B & 3C
 

Session 3A - Complete Streets   (Steinbeck I, Monterey Conference Center)
Moderator: Rebecca Mowry, Caltrans

Roundabouts Can't Exist on Complete Street Corridors...Or Can They??

  • Michael McBride, American Structurepoint
  • Jeremy Kashman, City of Carmel, Indiana

Evolution of a Complete Street Roundabout Corridor Project

  • Kamesh Vedula, GHD

Roundabouts – The Multimodal Solution for Complete and Safe Streets

  • Lindsey Van Parys, GHD

 

Session 3B - Geometric Design Principles Panel Discussion  (Design Forum with Audience Participation) (Serra I, Monterey Conference Center)

 Moderator: Brian Roberts 

  • Mark Johnson, MTJ Roundabout Engineering 
  • Daniel Spann, Barge Design Solutions
  • Rachel Price, Roundabotix
  • Tommy Alexy, Barge Design Solutions

 

Session 3C - Roundabout Support (Spotlight Session)   (Serra II, Monterey Conference Center)

Moderator: Josh Johnson, HDR

Chief of Police and Fire Chief Roundabout Testimonials, Version 2.0

  • Catherine Sydnor, Kimley-Horn and Associates, Inc.

IADOT Peer Review Program

  • Brian Ray, Sunrise Transportation Strategies, LLC

Supporting Roundabouts at Caltrans

  • Ranjeet Bagha, Caltrans

 

5–7 p.m Reception & Exhibits (De Anza Ballroom II & III, Portola Hotel)
   
Tuesday, May 17, 2022 
 
 
7:30am-3:00pm Registration Open (De Anza Ballroom Foyer, Portola Hotels)
7:30am-8:00am Continental Breakfast (De Anza Ballroom I, Portola Hotel)

8:00am – 9:30pm

(90min)

CONCURRENT SESSIONS 4A, 4B & 4C

 

Session 4A - Safety  (Steinbeck I, Monterey Conference Center)

Moderator: Rich Crossler-Laird, Oregon DOT

Addressing the “Merge” Problem at Multilane Roundabouts

  • Phil Weber, CIMA+

Safe Systems and Systemic Roundabouts

  •  Phil Rust, City of San Diego

Applying Line-and-Island Model Analysis to Real-World Roundabouts

  • Joseph Gustafson, Washington County (MN)

 

Session 4B - Non Motorized Users(Spotlight Session) (Serra I, Monterey Conference Center)

Moderator: Nicholas Shultz, City of Newark, Ohio

Raised Crosswalks at Roundabouts: Safety Benefits Realized by All Users

  • Michael McBride, American Structure Point
  • Jeremy Kashman, City of Carmel, Indiana

Pedestrian/Vulnerable User Safety and Design Implementation at Roundabouts

  • Mark Johnson, MTJ Roundabout Engineering

Raised Crosswalks:  Lessons Learned

  • Letty Schamp, City of Hillard, Ohio

 

Session 4C - Crash Investigations    (Serra II, Monterey Conference Center)

Moderator: Matthew Enders, WSDOT

Roundabout Crash Rates - What We Can Learn From Them

  • Dan Dovey, King County, Washington State

Anatomy of Multi-lane Roundabout Crashes

  • Stephen Thieken, Burgess & Niple Inc.

The New Turbo Roundabout at St-Lambert - User safety at the heart of our concerns

  • Jordan Belovski, Stantec

 

9:30am– 10:00am

(30min)

 Break and Poster Session-2   (De Anza Ballroom I, Portola Hotel)

 

Application of Roundabout Channelization at Rotaries

  •  Radu Nan, Kittelson & Associates Inc.

The Effects of Roundabout Geometry on Ramp Terminal Crashes

  • Beau Burdett, University of Wisconsin, Madison

Roundabout Revisited - E. McEwen Drive Roundabout Refit

  •  Tommy Alexy, Barge Design Solutions Inc.

Analysis of Traffic Safety for Cyclists at Compact Roundabouts in Japan

  • Koji Suzuki, Nagoya Institute of Technology

The Shift to Separate Bicyclists and Pedestrians at Roundabouts

  • Jorge Vanegas-Moran, GHD

Developing San Diego's Roundabout Design Guidance

  • Phil Rust, City of San Diego

Flared Entries and Geometric Model Comparison

  • Mark Johnson, MTJ Roundabout Engineering

 

10:00am– 11:30am

(90min)

CONCURRENT SESSIONS 5A, 5B & 5C

 

Session 5A - Turbo Roundabouts  (Steinbeck I, Monterey Conference Center)

Moderator: Lindsey Van-Parys, GHD

Bringing the Turbo Roundabout to the US

  • Brian Moore, Arcadis
  • Jaap Tigelaar, Arcadis

Buffered Roundabouts

  • Sean Houck, Kimley-Horn and Associates

Choice of Design Vehicle for Different Parts of Turbo

  •  Bertus Fortuijn, Delft Technical University

 

Session 5B - Considering All Users  (Serra I, Monterey Conference Center)

Moderator: Joe Gustafson, Washington County

San Pablo Ave Corridor Bike Treatments

  •  Michael Greer, Dokken Engineering

Meeting the Challenge - Carmel's 96th Street roundabout corridor

  • Jeremy Kashman, City of Carmel, Indiana

Ottawa Street Double Roundabouts

  • Dot Roga, MTE Consultants

 

Session 5C – Panel Discussion of Trucks at Roundabouts (Spotlight Session)   (Serra II, Monterey
Conference Center)

Moderator: Hilary Isebrands, FHWA

  • Andrew Thompson, Urban Engineers
  • Michael Mastaglio, Urban Engineers
  • Brian Walsh, Washington State DOT

 

11:30am–1:00pm

Lunch (De Anza Ballroom II & III, Portola Hotel)

Speaker: Brian Walsh (TRB Roundabouts Committee Chair)

1:00pm–4:45pm Bus Tours of Holman Highway 68 Roundabout

1:00pm– 2:45pm

(105min)

CONCURRENT SESSIONS 6A, 6B & 6C

 

Session 6A - Education/Outreach (Spotlight Session)  (Steinbeck I, Monterey Conference Center)

Moderator: Randy Johnson, DKS

Roundabout Education: Going Nowhere in Circles    

  • Mi Ae Lipe, Driving in the Real World

The First Dogbone Interchange in Iowa    

  • Chris Saxby, Foth

A Few Good Roundabouts:  "You CAN handle the truth!" Making the Case for Roundabouts and Safer Design Alternatives

  • Daniel Spann, Barge Design Solutions, Inc.

Roundabout Public Engagement – Telling our Story  

  • Hillary Isebrands, FHWA

Session 6B - Rail   (Serra I, Monterey Conference Center)

Moderator: Ranjeet Bagha, Caltrans

Light Rail and Roundabouts – A True Complete Street on Main Street

  • Joseph Perrin, A-Trans Engineering
  • Bill Baranowski, RoundaboutsUSA

Replacing traffic signals at-grade rail crossings and roadway junctions with roundabouts, for better operation, recovery, and safety.    

  • Frank Penry, GHD Inc.
  • Matt Wargula, GHD Inc.

Don't Let Tracks Stop You    

  • Brian Walsh, Washington State DOT

Roundabouts and Railroads Can Co-Exist - Implementation Experience and Overcoming Challenges

  • Hardik Shah, American Structurepoint

 

Session 6C - Safety Principles   (Serra II, Monterey Conference Center)

Moderator: Dan Dovey, King County

Size Does Matter

  • Christopher Raymond, Georgia Department of Transportation

Developing Project-specific Geometric Design Domains Using Human Factors & Highway Safety Principles

  • Rudy Clayton, Morrison Hershfield Ltd.

Right-Sized Roundabouts - Considerations for Design

  • Jeff Jones, Six Mile Engineering

Bardin Roads Safe Routes to School Project

  • Sean Houck, Kimley-Horn and Associates
2:45pm - 3:15pm Break with Posters still Available (De Anza Ballroom I, Portola Hotel)

3:15pm – 4:45pm


90min

CONCURRENT SESSIONS 7A, 7B & 7C

 

Session 7A - Education and Outreach  (Steinbeck I, Monterey Conference Center)

Moderator: Nathan Belz, University of Alaska Fairbanks

Keeping Traffic Moving in Cottonwood Heights

  • Bill Baranowski, RoundaboutsUSA

Roundabout Public Education: How Insufficient Outreach Limiting Progress Toward Vision Zero

  • Michael McBride, American Structurepoint

Navigating the Stakeholder Engagement Process for Roundabouts on State Highways and Freight Routes

  • Rich Crossler-Laird, Oregon Department of Transportation

 

Session 7B - Challenges of 2x2 (Spotlight Session)  (Serra I, Monterey Conference Center)

Moderator: Phil Weber, CIMA+

How We “Fixed” our High Crash Roundabouts…Did it Work?

  • Letty Schamp, City of Hilliard

FHWA Pooled Fund study

  • Justin Bansen, Kittelson & Associates, Inc.

Signing and Pavement Marking Principles to Optimize Safety of Multilane Roundabouts

  • Mark Johnson, MTJ Roundabout Engineering

 

Session 7C - Design Analysis  (Serra II, Monterey Conference Center)

Moderator: Joseph Balkus, VHB

Choosing the Right Traffic Analysis Tool

  • Stephen Thieken, Burgess & Niple, Inc.

A Comparative Analysis of Exponential and Linear Roundabout Capacity Models Using HCM Research Data

  • Mark Besley, SIDRA Solutions

Capacity analysis of Roundabout

  • Rajashekar Reddy Dudipala, Osmania University

 

 

 
Wednesday, May 18, 2022  
7:30–10:00 a.m. Registration Open (De Anza Ballroom Foyer, Portola Hotel)
7:30–8:00 a.m. Continental Breakfast (De Anza Ballroom I, Portola Hotel)
8:00–9:30 a.m.

Session 8A - Research Projects  (Steinbeck I, Monterey Conference Center)

Moderator: Amanda Austin, Texas DOT

Overview on Roundabout Research

  • Hillary Isebrands, FHWA

NCHRP 03-130  Guide For Roundabouts Update

  •  Brian Ray, Sunrise Transportation Strategies, LLC

Roundabout Research

  • Nathan Belz, University of Alaska Fairbanks

 

Session 8B - Innovation and Technology  (Serra I, Monterey Conference Center)

Moderator: Michelle Mach, Transportation Solutions Inc. 

Capacity Increase at the i-Roundabout and i-Turboroundabout Compared

  • Bertus Fortuijn, Delft Technical University

An innovative assessment of roundabout gap acceptance using Artificial Intelligence analytics

  • Frank Penry, GHD 

Workflow for a 3D Conflict Analysis Between Roundabout Surfaces and OSOW Vehicles.

  • Elisabeth Hofbauer-Spitzer, Transoft Solutions Inc. 

How We Got to Roundabout Metering 

  • LisaRene Schilperoot, WSDOT

 

Session 8C - A Challenge to the Status Quo  (Serra II, Monterey Conference Center)

Moderator: Daniel Spann, Barge Design Solutions Inc. 

Flexible Roundabout Lighting Design: Pennsylvania DOT’s New Lighting Policy

  • Lee Rodegerdts, Kittelson & Associates Inc. 

Steepening the Curve - Roundabouts on Grade

  • Daniel Kehrer, GHD

Roundabout Evolution in Georgia

  • Jaap Tigelaar , Arcadis
  • Scott Zehngraff, Georgia DOT

 

9:30–9:45 a.m. Break (De Anza Ballroom I, Portola Hotel)
9:45–11:00 a.m.
(75 min)

CONCURRENT SESSIONS 9A & 9B 

 

Session 9A - Roundabout Video Theater   (Steinbeck I, Monterey Conference Center)

Moderator: Rachel Price, Roundabotix

An Interactive Discussion of Current Roundabouts in Operation 

 

Session 9B - Innovative Intersections   (Serra I, Monterey Conference Center)

Moderator: Steve Thieken, Burgess & Niple Inc. 

Veterans Memorial Parkway and State St

  • Jeff Jones, Six Mile Engineering

Innovation in Bike Treatments

  • Michael Greer, Dokken Engineering

DDI in California

  • Matt Brogan, Mark Thomas
11:00–11:15 a.m. Break (De Anza Ballroom I, Portola Hotel)
11:15–12:15 p.m.
(60 min)
Closing Plenary Session (De Anza Ballroom II & III, Portola Hotel)