Are there any traffic signals engineers on these forums?
I'm not currently a traffic signal engineer. However, I have taken graduate-level coursework in traffic engineering--which has included classes on traffic simulation (including signals) and traffic flow theory--as well as been involved with a transportation research group that has worked on several projects/studies related to signal timing/operations issues.
Yes.
I'm planning to study to become a traffic engineer, which includes signals and timing.
If one of you could come to Orange County, FL please and show these people here how to properly time lights on major highways!