How does a traffic signal work?

Traffic signals work by assigning the right-of-way to each movement at an intersection using a combination of programmed timing parameters, input from vehicle presence sensors, and operational data from other nearby traffic signals. During peak periods, the traffic signals on arterial roadways operate in a coordinated (or synchronized) mode to move large groups of vehicles through the system together with fewer stops and, therefore, less delay.

Show All Answers

1. How does a traffic signal work?
2. Who do I call if the signal isn't working properly?
3. How are speed limits determined (or changed)?
4. What is traffic calming?
5. What can be done about speeding in my neighborhood?
6. Does the City of Cedar Park have a traffic calming program?
7. How do the pedestrian signals (walk/don't walk) work?
8. How do I request a Stop Sign, traffic signal or Speed Limit Sign for an intersection?
9. Why doesn't the city of cedar park install "Children at Play" signs?
10. I have noticed certain signs with curve symbols and a lower speed limit posted directly below the sign. How is this speed limit established?
11. I see cameras at certain intersections. What do they do? Does the City of Cedar Park use photo-radar or other automatic enforcement techniques?
12. How can I get more information about traffic volumes and speeds on my street?
13. Who can I call if I cannot see at an intersection because of trees, plants, privacy fences, etc.?
14. What is a TIA (Traffic Impact Analysis) and why is one required? What type of developments require a TIA?
15. How does the City of Cedar Park determine where new roads go?