Speed Trap Hunter Forum: Best Radar Detectors, Laser Jammers, Laser Detectors, Speed Cameras Forum  

Go Back   Speed Trap Hunter Forum: Best Radar Detectors, Laser Jammers, Laser Detectors, Speed Cameras Forum > Speed Trap & Traffic Enforcement > Economics & Politics
Radar Detectors Forum Logon:

Economics & Politics Discussion of the economic and political market driving factors of automated enforcement technology.

LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 2008-04-01
NMA Reporter NMA Reporter is offline
Senior Member
Join Date: 2008 Feb
Posts: 125
NMA Reporter is on a distinguished road
Exclamation Denver, Colorado Caught Exploiting Short Yellow Lights

Article: Denver, Colorado Caught Exploiting Short Yellow Lights

Denver signalDenver, Colorado was caught this week attempting to add red light cameras at intersections with short yellow times. Rocky Mountain News reporters videotaped the city's four proposed ticketing locations and discovered that each had a yellow signal time set at 3.0 seconds -- a figure below recommended standards.

A 2005 Texas Transportation Institute study confirmed that yellows shorter than the bare minimum recommended amount cause an increase in both accidents and red light violations. A confidential memorandum obtained from a 2001 court trial in San Diego, California showed that the private vendor in charge of the photo ticketing program take advantage of that increase in the number of violations, as most companies are compensated on a per-ticket basis. For this reason, the company chose to install cameras only at intersections with high volume and Amber (yellow) phase less than 4 seconds."

Denver is following San Diego's pattern. At the intersection of 6th Avenue Freeway and Kalamath Street, one of the busiest in the city, the yellow warning time is a mere 3.02 seconds -- the absolute minimum allowed under federal regulations. The city's own standards show it should be at least 3.6 seconds. Under the 1976 Institute of Transportation Engineers (ITE) formula it should be 4.5 seconds, or more, because of particular visibility issues at the location. The Rocky Mountain News videotape shows clearly how an extra 1.5 seconds would eliminate the problem of red light entry at the intersection.

In the early 90s, however, the ITE changed its formula to reduce yellow times as red light cameras were being introduced into the United States. The Office of former US House Majority Leader Dick Armey argued in 2001 that cities used cameras to exploit the intersections mistimed as a result of the new, shorter formula. (view report)

"Red light cameras present a perverse disincentive for local jurisdictions to fix intersections with excessive red light entries," the majority leader's report explained. It's hard to fix a 'problem' that brings in millions in revenue."

Denver's city engineer promised to "review" the city's yellow timing policy. In nearby Fort Collins, the installation of a red light camera at College Avenue and Drake Road did nothing but increase the accident rate by 45 percent. Immediately after increasing the yellow light duration by one second, violations plunged and the accident rate dropped 30 percent -- from 2.8 to 2.0 accidents per million vehicle entries. Source
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Colorado: Benefit of Yellow Timing Increase Documented in Denver NMA Reporter Economics & Politics 0 2009-01-11 23:03
California: City Caught Trapping Drivers with Short Yellows NMA Reporter Economics & Politics 0 2008-11-26 11:32
Group to Shame Cities with Short Intersection Yellow Time NMA Reporter Economics & Politics 0 2008-11-14 21:22
Help Us Stop Short Yellow Lights NMA Reporter NMA Articles 0 2008-11-12 22:01
6 Cities That Were Caught Shortening Yellow Light Times For Profit NMA Reporter NMA Articles 5 2008-03-31 21:56

All times are GMT -4. The time now is 09:38.

©2019 SpeedTrapHunter