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...

The following is a critique of the paper "Traffic Dynamics" written by Ross (1988).

In the theory of "kinematic waves," as described originally by Lighthill and Whitham in 1955, the evaluation of the shock path is typically rather tedious. Instead of using this theory to evaluate flows or densities, one can use it to evaluate the cumulative flow A(x, t) past any point x by time...

Suppose that one specifies the times at which vehicles enter each freeway junction and where (but not when) they will exit. The problem is to determine the cumulative flows past various points of the freeway, trip times, etc. To solve this problem, one must combine the equations of traffic...

Deterministic approximations for elevator trip times are applied to a system of m elevators. Comparisons of in-system time of passengers are made for elevators which are (a) physically separated, (b) ideally controlled, (c) zoned, or (d) uncontrolled. A more detailed study is then made of...

For a freeway having various entrance and exit ramps, the methods described in Part I are used to relate the cumulative flow curve at any junction to the net cumulative entrance flow at this junction, and the cumulative flow curves for the freeway at the next upstream junction and/ or the next...

For the delivery of valuable goods (such as people in a van pool), we assume that it costs cv per unit time during a round trip time of a vehicle and it costs cu/C per unit time for each of C items being delivered only during the travel time from the source to the point of delivery. The...

We consider here what happens to traffic on a freeway when a queue from an exit ramp backs onto the freeway causing a partial blockage of the right lane. Exiting vehicles are confined to the right lane but through vehicles can travel in any lane. The two vehicle types interact but their queues...