01590290

Component

Reliability of bus travel time is an objective of major concern for bus operators and users. However, due to traffic conditions and variability in bus demand, deviations from schedules are unavoidable, leading to an overall decrease in level of service and capacity. The ability to accurately and effectively analyze various performance measures is fundamental to determining how well the bus service is adhering to its service standards. Understanding and developing methods to assess transit operations performance is not only valuable in identifying potential problem areas along a route; it is also constructive in proposing effective strategies to improve service reliability. After a state-of-the-art and a state-of-practice studies of the service regularity measures for high-frequency buses, the authors propose in this paper the use of the Lorenz curve as a tool for the analysis of bus regularity. They show that the Lorenz curve, if drawn for the scheduled headways, allows analysis of the regularity of the waiting time of all riders of the bus line and is a good measure from the users’ point of view. The Lorenz curve drawn for the ratio of the observed to the scheduled headway allows analyzing the regularity of the bus service with regard to the scheduled headways and is therefore an effective measure, mainly from the operator’s point of view.

This paper was sponsored by TRB committee AP050 Standing Committee on Bus Transit Systems. Alternate title: Gini Index for Evaluating Bus Reliability Performance for Operators and Riders

01584066

16-4231

English

13p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

References; Tables

Bus drivers; Bus routes; Bus transit; Passengers; Reliability; Traffic congestion; Travel time

Operations and Traffic Management; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning; I73: Traffic Control

Transportation Research Board Annual Meeting 2016 Paper #16-4231

TRIS, TRB, ATRI

Jan 12 2016 5:52PM