Are signals coordinated in both directions?
The updated coordination uses a specialty program known as SYNCRO which tries to coordinate in both directions, but in reality coordination generally favors the primary direction that is carrying the highest percentage of the volume. Since much of the traffic on our major arterials is very directional during the am and pm peak, we generally see better coordination in these directions. For example, northbound Moulton Parkway/Golden Lantern has about 70% of the traffic going northbound in the morning and about 70% going southbound in the afternoon. For those streets where we use mid-day or Saturday coordination, the volumes are more balanced and so we have tried to provide more balance in the coordination.

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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?