Replies

> Let me know where I can find those studies.

Be glad to. Get an engineering degree. Join the engineering organizations in your field. Subscribe to their usual publications. Go to their seminars and conventions each year. Read the lastest studies, listen to the people doing the studies when they make their presentation, offer constructive criticism, see the updated studies in following years with the criticisms answered. When the study is accepted by your peers, it will be worked into standards that EVERYONE uses, like the MUTCD.

And no, I don't have a couple of webpages that you can glance at. Most of this information is available only to members until it is adopted.

>>Be glad to. Get an engineering degree.

Got one.

>>Join the engineering organizations in your field. Subscribe to their usual publications. Go to their seminars and conventions each year. Read the lastest studies, listen to the people doing the studies when they make their presentation, offer constructive criticism, see the updated studies in following years with the criticisms answered. When the study is accepted by your peers, it will be worked into standards that EVERYONE uses, like the MUTCD.

Hump you, too. I guess you are just blowin' smoke. I am familiar with the MUTCD. I am just looking for the studies that find no benefit to lengthened yellows.

Here is one that shows a benefit:

"The study found that improving signal visibility reduced violations 25 percent. Other changes could net between 18 and 48 percent reductions. Yet they found when the yellow signal was 1 second shorter than the standard ITE timing formula specifies, red light violations jumped 110%. ***Extending the yellow an additional second yielded 53% reduction in violations, producing the greatest benefit of all the factors studied*** (2-6)."

http://www.motorists.org/issues/enforce/tti04.html
http://www.motorists.org/issues/enforce/studies/tti04.pdf