A comparison is made between the rolling horizon strategy of traffic signal control at an isolated intersection and the strategy of switching the signal when a queue vanishes. It is shown that the former strategy has some undesirable consequences.

S. L. Albin has described extensive simulations of queue behavior for a system with a single server and an arrival process that is a superposition of n renewal processes. The simulations show, among other things, that as n increases for a fixed traffic intensity \rho, the queue behavior...

1. Introduction -- 2. Limit properties for a » 1 -- 3. Descriptive properties of the evolution -- 4. The overflow distribution -- 5. Joint distributions -- 6. A diffusion equation -- 7. Transient properties -- 8. Equilibrium properties of the diffusion equation -- 9. Equivalent random method --...

Approximate analytic methods are used to describe how the equilibrium trip time of an elevator depends upon the physical characteristics of the elevator, the passenger demand, and possible strategies of operation. The analysis is directed particularly toward elevators in buildings of moderate...

Suppose that a vehicle or convoy enters a two-lane unidirectional roadway and travels at a velocity v* less than the prevailing traffic. This moving bottleneck may cause a queue to form as vehicles try to pass the obstruction. It is shown that by going to a moving coordinate system traveling at...