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SVTPerformance's Chain of Restaurants
Donut Shop
Question about proceeding through Yellow Lights
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<blockquote data-quote="Junior00" data-source="post: 14551623" data-attributes="member: 30475"><p>First you need to establish whether your state is a "permissive yellow" or "restrictive yellow" state. From there, you can use the posted speed to calculate yellow and red light timing that the municipality SHOULD be following. You can find the equation and a table with explanations on page 139 of the ITE Signal Timing Manual. You can also find that information and the guidelines used to establish the variables in the NCHRP Manual, around page 50 iirc.</p><p></p><p>Once you've looked up that information, you can use a stopwatch or camera to record the time (video is better as you can discern time by breaking it down by frame rate) and compare it to the calculated minimums established by the aforementioned publications and see whether they are cheating the public so to speak on time. If they are, then you have a plausible case for not stopping.</p><p></p><p>I can tell you this because my wife got nailed at a redlight, and she had the same thoughts. After a bit of research, I calculated the values they should have used in accordance with the posted speed and my state's ordinances and found they were under by .3 seconds and had the case dismissed. It comes down to whether the municipality has leeway to adjust timing outside of the established nationally recognized values that are in the manuals I listed earlier. In my state's case, they do not unless they apply and are granted a waiver by the DOT, which after making a phone call and receiving confirmation e-mail, I discovered they had not and had illegally lowered the yellow duration below national standards. I suggest you visit Municode to find that information out.</p></blockquote><p></p>
[QUOTE="Junior00, post: 14551623, member: 30475"] First you need to establish whether your state is a "permissive yellow" or "restrictive yellow" state. From there, you can use the posted speed to calculate yellow and red light timing that the municipality SHOULD be following. You can find the equation and a table with explanations on page 139 of the ITE Signal Timing Manual. You can also find that information and the guidelines used to establish the variables in the NCHRP Manual, around page 50 iirc. Once you've looked up that information, you can use a stopwatch or camera to record the time (video is better as you can discern time by breaking it down by frame rate) and compare it to the calculated minimums established by the aforementioned publications and see whether they are cheating the public so to speak on time. If they are, then you have a plausible case for not stopping. I can tell you this because my wife got nailed at a redlight, and she had the same thoughts. After a bit of research, I calculated the values they should have used in accordance with the posted speed and my state's ordinances and found they were under by .3 seconds and had the case dismissed. It comes down to whether the municipality has leeway to adjust timing outside of the established nationally recognized values that are in the manuals I listed earlier. In my state's case, they do not unless they apply and are granted a waiver by the DOT, which after making a phone call and receiving confirmation e-mail, I discovered they had not and had illegally lowered the yellow duration below national standards. I suggest you visit Municode to find that information out. [/QUOTE]
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Question about proceeding through Yellow Lights
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