The common rule I follow is +/- 5 miles per hour (~ 8 kph!) from the 85th percentile speed OR if you are looking for a posting lower than this you will want to install some physical means (traffic calming) to enforce the lower speed limit. The general idea is that most motorists (85 percent of...
If you can afford it, battery back up is preferred; followed by a gas powered generator with external plug (downside, you need to know the signal is out and send public works/police department to hook up the generator). However, I have seen a situation out here in the NE where signal that...
Hi--I do a significant amount of signal timing and phasing in PA.
There are three types of signal timing plans:
Pretimed, Fully Actuated, and Semi-Actuated
Actuation occurs when there are detectors present near a signalized interesection.
PreTimed means that the traffic signal bounces back...
I too am interested in reverse angle vs. forward load angle parking accident data. I found a non-numeric discussion in this Indiana town with references to other USA towns. It also contains a great description supporting the reasons reverse works better than forward loading. We too are...
