September 1, 2015

Independent Study finds Montgomery County’s Speed-Camera Program Yields Long-Term Safety Benefits and Serves as National Model

A study released on September 1, 2015 by the Insurance Institute for Highway Safety (IIHS) shows that “Montgomery County’s speed-camera program has led to long-term changes in driver behavior and substantial reductions in deaths and injuries. The IIHS is an independent, nonprofit scientific and educational organization dedicated to reducing the losses, deaths, injuries and property damages from crashes on the nation's roads. The study compared speeding in Montgomery County, which began utilizing a Safe Speed automated enforcement program in 2007, to the same time period and similar roads in Fairfax and Arlington counties which do not have speed camera programs.

Comparison safety gains in Montgomery County attributed to the speed-camera program include:
  • 19% reduction of the likelihood that a crash would involve a fatality or an incapacitating injury as reported by police officers at the scene; 
  • 59% reduction of the likelihood of a driver exceeding the speed limit by more than 10 mph; 
  • 39 % reduction of fatal or incapacitating injuries on residential roads with speed limits of 25-35 mph; 
  • 27% reduction of fatal or incapacitating injuries on 40 mph roads as a result of the camera program on roads with limits of 35 mph or less; and 
  • An additional 30% reduction in the likelihood of a crash involving fatal or incapacitating injury was produced by the “Corridor Approach,” which utilizes more than one camera on a stretch of roadway.
Read more about the study in the Washington Post; or view the full report.

3 comments:

  1. Actually, I think the reduction involves more than just the cameras. Traffic lights have been set to slow down traffic. On the road I travel, there seems to a red light at each intersection. By stopping traffic at every intersection with a street light it naturally slows the average speed. I have noticed a lot of people trying to beat the traffic lights, which involves higher speeds and is dangerous. When you read the report, accident statistics are not reported. Also, auto insurace rates have not declined and have increased in this area. This is indicative that the area is not really safer. Of course by stopping traffic at each intersection the state and county can benefit through the higher sales tax receipts on gasoline.

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  2. "independent" OH PLEASE. This very propaganda arm of the scamera industry was busted on a RLC report years earlier manipulating it! http://www.thenewspaper.com/news/33/3393.asp

    IIHS CLAIM of speed camera causing less crashes is DISHONEST AS THE NON CAMERA Control sites (VA) HAD A SIMILAR REDUCTION IN CRASHES (%).

    http://www.thenewspaper.com/news/47/4779.asp
    “IIHS report data show no difference in safety between control group without speed cameras and sites with speed cameras.”

    Even worse, IIHS also omitted crashes too. "The IIHS researchers decided to adjust the data to specifically exclude consideration of certain types of accidents, such as the rear end accidents that happen when a driver slams on the brakes to avoid a speed camera ticket. "

    http://www.mddriversalliance.org/2015/09/insurance-industry-study-shows-same.html
    “Comparing the average accident rates from 2004-2006 to accident rates from all of 2008-20013 would have shown that Montgomery County roads fared 5.8% worse than Fairfax County: Accident rates on speed camera roads declined by 21.1% compared to a 26.9% decline on non speed camera roads in Fairfax county”

    How can IIHS claim less “crashes” because of speed cameras WHEN THE NON CAMERA SITES DID JUST AS WELL IF NOT BETTER!

    The poll claims in the IIHS "study" are even more dubious as voters last year in Cleveland BANNED RLC.

    Heck even polls in the DC area (that include Montgomery) showed most hated the speed cameras!
    http://wtop.com/news/2012/05/wtopre-beltway-poll-traffic-cameras-are-money-machines/
    "Nearly two-thirds of people in the Washington area believe the primary role of speed and red-light cameras is to create cash for local governments — not to make roads safer.”

    Even a earlier IIHS poll was exposed as skewed to create result. http://www.thenewspaper.com/news/35/3521.asp “Nearly 64 percent of the survey respondents were over the age of 51, although only 30 percent of the US population falls into that age range, according to US Census Bureau data. Only 5 percent surveyed were under the age of 30, whereas 21 percent of the driving-age US population is under 30.”

    Bottom line, this “study” is just another in a long line of MANUFACTURED REPORTS in a desperate attempt to claim “cameras work” (WHEN THEY DON’T, or why are did the NON Camera site do just as well) and cameras are “popular” DESPITE voters wanting and have Banned them in many areas!

    (Also note that vendors have been also known to "help" do "reports" too.)


    www.motorists.org
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    Replies
    1. The commenter’s claim that the Institute study of the speed camera program in Montgomery County shows no safety benefit isn’t correct. While it’s true that the reduction in total crash counts on the control roads was similar to the reduction on the camera-eligible roads, the commenter ignores the finding that there was a significant 39% reduction in the likelihood that a crash resulted in an incapacitating or fatal injury, meaning that the crashes that occurred were less serious.

      The commenter is wrong in asserting that the institute study excluded certain types of crashes, such as rear-end crashes. This claim is based on a lack of understanding of the methodology used in the study. To evaluate the effect of the speed camera program on the likelihood that a crash resulted in an incapacitating or fatal injury, all the crashes were included in the analyses regardless of the crash type or crash severity.

      The commenter claims that the survey of Montgomery County drivers is skewed because of an overrepresentation of older respondents. The survey participants were randomly selected and the responses were weighted to reflect the age and gender distribution of the population ages 18 and older of the county in 2014.

      The study was funded entirely by the Insurance Institute for Highway Safety, which is supported wholly by auto insurance companies. The Institute gets no funding from the photo enforcement industry. The allegation is frequently made that funding from the insurance industry makes the Institute’s research biased because its insurance company supporters benefit from photo enforcement by raising rates on drivers ticketed by cameras. To the contrary, in most of the country there is no insurance consequence from photo enforcement; tickets from cameras don’t go on the driver’s record; and no points are assessed. In Maryland, where Montgomery County is located, the law prohibits insurers from using the violations to set rates and no points are assessed from the tickets from speed cameras.

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