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原文传递 Evaluation of Bus Transit Reliability in the District of Columbia.

题名：	Evaluation of Bus Transit Reliability in the District of Columbia.
作者：	Arhin, S.; Noel, E. C.
关键词：	Bus Services; Customers; Decision Making; District Of Columbia; Performance Evaluation; Public Transportation; Rail Transport; Reliability; Scheduling; Surveys; Transit Buses; Travel Time
摘要：	Several performance metrics can be used to assess the reliability of a transit system. These include on-time arrivals, travel-time adherence, run-time adherence, and customer satisfaction, among others. On-time arrival at bus stops is one of the performance metrics of the Washington Metropolitan Transit Authority (WMATA). A bus is considered to be on time by WMATA if it arrives at most two minutes earlier or seven minutes later than the scheduled arrival times, with a performance goal of 78%. Most regional transit agencies consider arrivals that fall within one minute earlier or five minutes later than the scheduled arrival times as being on time. The goal of this project was to determine the on-time performance and their statistical significance based on WMATAs advertised threshold and the industry standard for on-time arrivals. Fifteen bus routes in Washington DC with several stops were studied in this research. WMATAs published bus schedules provided expected arrival times. An on-board manual survey was conducted from June 2012 through June 2013 for peak morning and afternoon travel on those routes during which the actual arrival times at the bus stops were noted and compared with the scheduled arrival times. For WMATAs two-minutes-early and seven-minutes-late arrival threshold, the buses were found to be on time approximately 82% of the time, on average, during the morning. In the evening, for the same threshold, only 68% of the buses on average were considered to be on time. This results in an overall on-time performance of 75%, which is a modest improvement over the 2010 on-time performance of 74%. Based on the one-minute-early and five-minutes-late arrival threshold used by several regional transit agencies, the buses were found to be on time approximately 67% of the time during the morning and 55% in the evening, resulting in an overall performance of 61%.
报告类型：	科技报告