The effect of queues on the traffic assignment to freeways.

The reason queues form on a freeway is that, even at capacity behind a bottleneck, the speed of travel on the freeway is higher than an other routes (city streets or arterials). It is clear that let queues form on the freeway can lead to various levels of inefficiencies including a virtual loss of certain sections on the freeway. Almost any type of control which would eliminate these queues is better than no control.