Abstract
Bus dwelling time at stops is affected by the number of boarding and alighting passengers. Due to the uncertainty of traffic state, dwelling time will become unstable, resulting in unreliable bus operations. A short-turn strategy shares passenger demand in certain segments of the full-length vehicles; therefore, this strategy can reduce the dwell time of the full-length vehicles and have potential to improve reliability of bus operations. Firstly, this paper builds a bus operation state model considering short-turn vehicles. Secondly, the process of bus operation is analyzed to investigate the impact of passenger demand on reliability. Then, we propose a short-turn dispatching strategy, which can accurately determine the operation area and departure time. Finally, a numerical simulation is used to evaluate different strategies. As the result, the analysis reveals the following: (1) the bus operational reliability of full-length vehicles under high passenger demand could be improved by a well-designed short-turn strategy; (2) it is beneficial to improve the reliability of bus operation when short-turn vehicles departure at the change point; and (3) an undesigned short-turn dispatching strategy has a negative effect on full-length vehicles operational reliability. This study can help design a short-turn strategy and make valuable contributions to the bus management system.
Highlights
Bus priority development policy is an important transportation strategy to solve traffic problems in large cities and achieves sustainable urban development
E reminder of this paper is summarized as follows: in Section 2, the operation process of buses is modeled; in Section 3, we explored the impact of passenger number on the operation state of buses; in Section 4, the method of establishing the operating area and departure time of shortturn vehicles is discussed; in Section 5, a simulation experiment is executed with different strategies and the results are analyzed
A bus operation state model considering the operation of short-turn vehicles was firstly established. en, two parameters affecting the operation state of buses are analyzed, which are passenger arrival rate and bus travel speed
Summary
Received 16 October 2019; Revised 26 November 2020; Accepted 4 December 2020; Published 15 December 2020. Due to the uncertainty of traffic state, dwelling time will become unstable, resulting in unreliable bus operations. A short-turn strategy shares passenger demand in certain segments of the full-length vehicles; this strategy can reduce the dwell time of the full-length vehicles and have potential to improve reliability of bus operations. En, we propose a short-turn dispatching strategy, which can accurately determine the operation area and departure time. The analysis reveals the following: (1) the bus operational reliability of full-length vehicles under high passenger demand could be improved by a well-designed short-turn strategy; (2) it is beneficial to improve the reliability of bus operation when short-turn vehicles departure at the change point; and (3) an undesigned short-turn dispatching strategy has a negative effect on full-length vehicles operational reliability. The analysis reveals the following: (1) the bus operational reliability of full-length vehicles under high passenger demand could be improved by a well-designed short-turn strategy; (2) it is beneficial to improve the reliability of bus operation when short-turn vehicles departure at the change point; and (3) an undesigned short-turn dispatching strategy has a negative effect on full-length vehicles operational reliability. is study can help design a short-turn strategy and make valuable contributions to the bus management system
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