Uppeak, Down Peak & Interfloor Performance Revisited

It is easy to calculate the round trip time, interval and handling capacity of a specified lift system. This does not, however, give an accurate idea of performance as represented by passenger waiting times, as these are greatly affected by car load and the probability distribution function of the passenger arrivals. This paper provides, with worked examples, a simple method of estimating average passenger waiting times for the three major traffic conditions.