What is Traffic Signal Coordination?
The basic goal of traffic signal coordination is to take a group of fairly closely spaced vehicles (called a platoon) traveling in the same direction through a series of intersections at a speed at/near the speed limit. The “optimal progression speed” never exceeds the speed limit, but is usually set within 5 M.P.H. of the speed limit.

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1. What is Traffic Signal Coordination?
2. What is the best way/method for getting through the most signals without stopping?
3. Even if I drive at the speed limit I don’t seem to make it through all the lights. Why?
4. Which traffic signals are coordinated?
5. When are they coordinated?
6. Are signals coordinated in both directions?
7. Does coordination “break” at major intersections because the cross street volume is also very high?
8. Sometimes I have to wait almost 1-½ minutes (but can seem like 5 minutes) to get a green on a side street or a left turn even when there seems to gaps in traffic. Why?
9. Why don’t you coordinate all the time?
10. How do the signals operate when you don’t coordinate?