April 9, 2008.
California Office of Traffic Safety Summit
San Francisco, CA.
May 19, 2009
University of Minnesota Center for Transportation Studies
Bloomington, MN
June 23, 2009
Driving Assessment 2009
Big Sky, Montana
June 26, 2009
PRI World Congress
Rotterdam, The Netherlands
June 27, 2009
Day of Architecture
Utrecht, The Netherlands
July 13, 2009
Association of Transportation Safety Information Professionals (ATSIP)
Phoenix, AZ.
August 12-14
Texas Department of Transportation “Save a Life Summit”
San Antonio, Texas
September 2, 2009
Governors Highway Safety Association Annual Meeting
Savannah, Georgia
September 11, 2009
Oregon Transportation Summit
Portland, Oregon
October 8
Honda R&D Americas
Raymond, Ohio
October 10-11
INFORMS Roundtable
San Diego, CA
October 21, 2009
California State University-San Bernardino, Leonard Transportation Center
San Bernardino, CA
November 5
Southern New England Planning Association Planning Conference
Uncasville, Connecticut
January 6
Texas Transportation Forum
Austin, TX
January 19
Yale University
(with Donald Shoup; details to come)
Monday, February 22
Yale University School of Architecture
Eero Saarinen Lecture
Friday, March 19
University of Delaware
Delaware Center for Transportation
April 5-7
University of Utah
Salt Lake City
McMurrin Lectureship
April 19
International Bridge, Tunnel and Turnpike Association (Organization Management Workshop)
Austin, Texas
Monday, April 26
Edmonton Traffic Safety Conference
Edmonton, Canada
Monday, June 7
Canadian Association of Road Safety Professionals
Niagara Falls, Ontario
Wednesday, July 6
Fondo de Prevención Vial
Bogotá, Colombia
Tuesday, August 31
Royal Automobile Club
Perth, Australia
Wednesday, September 1
Australasian Road Safety Conference
Canberra, Australia
Wednesday, September 22
Wisconsin Department of Transportation’s
Traffic Incident Management Enhancement Program
Statewide Conference
Wisconsin Dells, WI
Wednesday, October 20
Rutgers University
Center for Advanced Infrastructure and Transportation
Piscataway, NJ
Tuesday, March 8, 2011
Ontario Injury Prevention Resource Centre
Injury Prevention Forum
Toronto
Monday, May 2
Idaho Public Driver Education Conference
Boise, Idaho
Tuesday, June 2, 2011
California Association of Cities
Costa Mesa, California
Sunday, August 21, 2011
American Association of Motor Vehicle Administrators
Milwaukee, Wisconsin
Wednesday, October 26, 2011
Attitudes: Iniciativa Social de Audi
Madrid, Spain
April 16, 2012
Institute for Sensible Transport Seminar
Gardens Theatre, QUT
Brisbane, Australia
April 17, 2012
Institute for Sensible Transport Seminar
Centennial Plaza, Sydney
Sydney, Australia
April 19, 2012
Institute for Sensible Transport Seminar
Melbourne Town Hall
Melbourne, Australia
January 30, 2013
University of Minnesota City Engineers Association Meeting
Minneapolis, MN
January 31, 2013
Metropolis and Mobile Life
School of Architecture, University of Toronto
February 22, 2013
ISL Engineering
Edmonton, Canada
March 1, 2013
Australian Road Summit
Melbourne, Australia
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October 7th, 2008 at 1:03 pm
The only solution may be a double red light for two or three seconds. Of course, as you say, if people know this, then some may take advantage.
January 6th, 2009 at 10:11 pm
There is an upcoming study that will be conducted by the National Cooperative Highway Research Program on the issue of setting Yellow and All Red Times. I agree that if drivers knew they may abuse the system. A study cited in the Signal Timing Manual (www.signaltiming.com) by Souleyrette, R. R., O’Brien, M. M., McDonald, T., Preston, H., and Storm, R., “Effectiveness of All-Red Clearance Interval on Intersection Crashes”, Center for Transportation Research and Education, Iowa State University, Minnesota Department of Transportation, MN/RC-2004-26, http://www.lrrb.org/PDF/200426.pdf, May 2004, states that lengthening the time of a red indication has no long term improvement on safety because of drivers learning the system.
March 13th, 2009 at 10:00 am
Just for the record. The dilemma zone is influence by more than the Yellow or Red time. It is mainly the result of detector placement,the minimum gap timing, vehicle speed and intersection congestion. Actually, Red timing has nothing to do with the dilemma zone. If a driver has made the decision to run the red, he is already past the dilemma zone.
The statement above is born not out of pure research or studies but more than 20 years of field experience.
June 1st, 2009 at 4:20 am
A dilemma Zone can be prevented by simply increasing the yellow light time, as usual timings are around 3 seconds, but if this time is increased to 4 seconds it would allow extra time for those who are in the orginal dilemma zone, to pass safely through the intersection.
This option would also create a negative dilemma zone calculation, which imply’s no dilemma zone is present, an overlap of the to situations…. All Positive.