Somebody Got It Right
Wed, 01/19/2011 - 1:04pm
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 17 years
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http://www.koat.com/news/26540220/detail.html
Under the name of safety the city of Albuquerque is lengthening the yellow light signal by .5 seconds at the 20 "red light camera" intersections. (Current or previous locations.)
Do you know
Do you know what the previous length of the yellow light timing was?
Also, do you know if there is an all-way-red interval between the lights in one direction turning red and the lights in the other direction turning green?
and what difference does it make?
Do you know what the previous length of the yellow light timing was?
Also, do you know if there is an all-way-red interval between the lights in one direction turning red and the lights in the other direction turning green?
What difference does it make about the yellow duration before it was lengthened? There were no complaints about it being too short and my contacts at the NM DOT state all signals must meet MUTCD and ITE requirements. As it stands now, the yellow duration exceeds the guidelines by a minimum of 1/2 second at these intersections.
Illiterate? Write for free help.
Better to err on the side of
Better to err on the side of yellow!
Fred
Being a statistician...
What difference does it make about the yellow duration before it was lengthened?
Box Car, thanks for the info.
Being a statistician, it would be of value to me in drawing any conclusions about possible reductions in accidents.
The article implied (though did not explicitly state) that clearing the interection was a goal - indicating to me that t-bone crashes were a problem. All-way-red intervals is the method that many jurisdictions (including mine) use to make sure that red light runners have had a chance to clear the interestion. That is the reason I asked if anyone knew about that.
Most opponents of red light cameras claim that lengthening the yellow light interval is a better way to BOTH reduce red light running AND reduce rear end crashes. That is what motivated my question about the length of the yellow interval.
If they already meet the minimums (which I assumed that they did or the article would likely have made some note if they did not), then this would be a chance to see if rearend crashes could be reduced at red light camera intersections by the simple expedient of lengthening the yellow interval.