NDLI: The impact of signaling system heterogeneity on urban transit capacity

Content Provider	IEEE Xplore Digital Library
Author	Wei Li Tao Tang
Copyright Year	2013
Description	Author affiliation: State Key Lab. of Rail Traffic Control & Safety, Beijing Jiaotong Univ., Beijing, China (Wei Li; Tao Tang)
Abstract	Chinese urban transit are experiencing rapid growth and increasingly need of capacity to accommodate it. Capacity planning requires knowing how the mixture of signaling systems affects capacity. Different signaling systems have different operating characteristics including headway, end of movement authority and braking point. Heterogeneity of signaling systems using in a railway line usually reduces capacity. In this paper, Blocking time model was used to exposit the headway of signaling systems as well as the headway between trains which are running in different signaling systems. Simulation software Railsys was used to analyze the effect on capacity when trains are in different signaling systems sharing a line of Beijing metro. Analyzes included the effect of the continuous transmission-based signaling system (moving-block), the spot transmission-based signaling system (fixed-block) and especially their mix as well as the effect of the percentage of mixture and sequence of trains in different signaling systems. The effect of relationship between capacity and the mixture and sequence of trains was also evaluated as well. These analyses attempt to provide a better understanding of how the signaling systems affect railway capacity and a complete understanding of one factor on capacity. Furthermore, the results can help planners verify if the urban transit lines satisfy the capacity demand and adjust timetable arrangement.
Starting Page	123
Ending Page	127
File Size	486307
Page Count	5
File Format	PDF
DOI	10.1109/ICIRT.2013.6696280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-30
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rails Trains mix ratio Analytical models Communication system signaling Railway Signaling system heterogeneity Capacity Switches Rail transportation Safety
Content Type	Text
Resource Type	Article

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