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Signal timing for fleeting multiple intersecting roadways

Increasing transportation efficiency by expanding roadway infrastructure is limited by maintenance costs, real estate, and lengthened commutes. An alternate solution has been optimizing traffic flow by fleeting traffic signals. A roadway is fleeted when its signal sequence allows a platoon of vehicles to travel its length without being stopped by a red light, which in turn reduces congestion. The advantages of fleeting could be increased by fleeting multiple intersecting roadways. Our research examines the conditions necessary to accomplish timing traffic signals in intersecting directions so that both directions can have platooned vehicles simultaneously. The traffic signals at the intersecting roadways must be synchronized to maintain the fleeting sequences for both roadways. Through our analysis, we conclude that the time to travel along the roadways between traffic signals that are timed for platooning in multiple directions must be equivalent. Since many roadway distances are already known (unless a new road is being constructed), the only variable affecting the time to travel along a roadway is the speed limit. If variable speed limits are used, traffic signals on intersecting roadways are able to be fleeted.