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 2009-08-16
NMA Reporter NMA Reporter is offline
Senior Member
Join Date: 2008 Feb
Posts: 125
NMA Reporter is on a distinguished road
Exclamation Arizona: Independent Test Shows Speed Cameras Do Not Slow Drivers

Article: Arizona: Independent Test Shows Speed Cameras Do Not Slow Drivers

RadarTest chartThe state of Arizona began deploying speed cameras on freeways last year for the stated purpose of slowing drivers. Scottsdale was the first jurisdiction in the state to use such cameras and issued $17 million worth of automated freeway tickets before the state took over the program. The city paid a local professor $75,000 to create a study to show that drivers had slowed. An expert in radar technology produced a report last month insisting that is not the case.

Craig Peterson is the founder of RadarTest.com, a company that has performed independent evaluations of various types of radar and laser speed detection equipment for nearly two decades. Peterson performed an independent and simple test of Arizona's photo radar program to verify whether drivers have actually slowed.

"Accurate statistics of accidents at camera locations won't be available for some time yet, but now that scores of speed cameras and a fleet of 100 photo radar vans have been deployed, it certainly isn't difficult to measure the cameras' effect on freeway speeds," Peterson explained.

Peterson set up his equipment on freeways in Glendale, Mesa, Prescott Valley and Star Valley. He used a Kustom Signals Pro Laser III lidar gun and LaserStat traffic survey software to measure speeds one-half mile before a speed camera and one-half mile after the camera during free-flow traffic. The sample included at least 200 measurements at each location using the speeds of cars in each travel lane. In all cases, Peterson strictly adhered to accepted engineering practices for performing a traffic speed study.

"Interestingly, the numbers from every site were nearly identical," Peterson wrote. "Far from slowing traffic, the cameras had no effect on freeway speeds... Aside from a brief dab at the brakes by a few drivers in reaction to fixed speed cameras -- frequently resulting in screeching tires from cars behind -- most seemed oblivious to them. Hardly any slowed in reaction to the speed vans."

The speed limit on the Loop 101 freeway is 65 MPH, although engineering guidelines suggest that limits be set at the 85th percentile speeds, the rate at which the vast majority of motorists safely travel. Peterson's measurements found that the 85th percentile speed on the Loop 101 ranged from 70 MPH to 73.4 MPH at the original photo radar locations in Scottsdale. Before and after speeds were identical except by a statistically insignificant increase in the after speed at two locations.

The National Motorists Association, which opposes the use of speed cameras, was not surprised by the findings.

"Believing the claims of companies that sell photo enforcement equipment or municipalities that use this equipment is like believing any commercial produced by a company that is trying to sell you something," the group explained on its website. "There is no independent verification that photo enforcement devices improve highway safety, reduce overall accidents, or improve traffic flow." 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
The Truth About Speed Cameras: They Don’t Work NMA Reporter NMA Articles 0 2009-08-11 19:41
Vigilantes Attack Speed Cameras in Arizona, France and Ireland NMA Reporter Economics & Politics 0 2009-01-11 00:03
Speed Cameras: ACLU of Iowa Challenges use of Speed/Red Light Cameras Veil Guy Speed on Green - Photo Enforcement 3 2008-12-03 08:55
The Effect Of Speed Limits On Actual Travel Speeds NMA Reporter NMA Articles 0 2008-08-24 22:19
Speed Cameras Effects: Harmful to Bill of Rights, Civil Liberties, and Freedoms Veil Guy Speed Camera 0 2008-02-08 22:01

All times are GMT -4. The time now is 12:38.

©2019 SpeedTrapHunter