01023084

Component

For bus transit systems, the probability concept is used to evaluate the Level-of-Service (LOS) of the bus vehicle operations. The LOS ranges could be divided according to the linear increase of a probability value. In this case, neither the drivers nor the passengers could distinguish the difference of probability. Therefore the service level could not be determined adequately from the passenger's point of view. This study poses some shortcomings of using the probability value in grading the service level through the case of evaluation of a bus operation's punctuality. To make up for the problems of such a case, an alternative method is presented in this study. The method of determining LOS criteria using the distribution of the coefficient of variation of headways, presented in this paper, adequately reflects passengers' expected waiting time and satisfaction. According to the analysis of real bus operation data, a new method seems to be more adequate than the method which uses the probability value in grading the service level to evaluate the reliability of bus operations. Since the distribution of LOS evaluation by suggested method is similar to the distribution of passengers' satisfaction about headway adherence. However, further research should be undertaken to develop a better method which considers the utility of time value.

01020180

06-0095

English

12p

2006

Transportation Research Board 85th Annual Meeting

CD-ROM

Figures (6) ; References (6) ; Tables (3)

Bus transit operations; Level of service; Passenger vehicles; Passenger volume; Passengers; Reliability; Vehicle operations; Waiting time

Headway adherence

Administration and Management; Operations and Traffic Management; Passenger Transportation; Planning and Forecasting; Public Transportation; I21: Planning of Transport Infrastructure

Transportation Research Board Annual Meeting 2006 Paper #06-0095

TRIS, TRB

Mar 3 2006 10:16AM