Social equity-based timetabling and ticket pricing for high-speed railways

Shou-yi, Zhan; Wong, S. C.; Lo, S.M.

doi:10.1016/j.tra.2020.04.018

Cited by 29 publications

(25 citation statements)

References 38 publications

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“…Our results offer three main policy implications. First, evidence is added to a chorus of scholarship calling for policymakers to ''look beyond the mean'' when conducting equity analysis (31,40). Agencies should seek to identify and improve poor-performing routes that serve significant numbers of marginalized travelers, regardless of network-wide averages.…”

Section: Discussionmentioning

confidence: 99%

Social Equity and Bus On-Time Performance in Canada’s Largest City

Palm

Shalaby

Farber

2020

Transportation Research Record: Journal of the Transportation R

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Bus routes provide critical lifelines to disadvantaged travelers in major cities. Bus route performance is also more variable than the performance of other, grade-separated transit modes. Yet the social equity of bus operational performance is largely unexamined outside of limited statutory applications. Equity assessment methods for transit operations are similarly underdeveloped relative to equity analysis methods deployed in transit planning. This study examines the equity of bus on-time performance (OTP) in Toronto, Ontario, the largest city in Canada. Both census proximity and ridership profile approaches to defining equity routes are deployed, modifying United States Department of Transportation (U.S. DOT) Title VI methods to fit a Canadian context. Bus OTP in Toronto is found to be horizontally equitable. It is also found that the U.S. DOT approach of averaging performance between equity and non-equity routes masks the existence of underperforming routes with very significant ridership of color. These routes are overwhelmingly night routes, most of which are only classified as equity routes using a ridership definition. These results suggest that the underperformance of Toronto’s “Blue Night” network of overnight buses is a social equity issue. This OTP data is also applied to a household travel survey to identify disparities in the OTP of bus transit as experienced by different demographic groups throughout the city. It is found that recent immigrants and carless households, both heavily transit dependent populations in the Canadian context, experience lower on-time bus performance than other groups.

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Section: Discussionmentioning

confidence: 99%

Social Equity and Bus On-Time Performance in Canada’s Largest City

Palm

Shalaby

Farber

2020

Transportation Research Record: Journal of the Transportation R

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“…Fourth, we assume that the running time of a train in a segment is fixed, but it would be better to let trains vary their running speeds in a segment. Finally, it is interesting to take the passenger flow into account when rescheduling trains, which can partly refer to our recent study on passenger-oriented train scheduling (Zhan, Wong, and Lo 2020) and rescheduling (Zhan et al 2021).…”

Section: Conclusion and Further Researchmentioning

confidence: 99%

Train rescheduling in a major disruption on a high-speed railway network with seat reservation

Shou-yi

Wong

Shang

et al. 2021

Transportmetrica A: Transport Science

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In this paper, we develop a method of real-time train rescheduling on double-track high-speed railway lines undergoing major disruption. As a result, trains approaching the disrupted area cannot use the blocked tracks and must be efficiently rescheduled. As most tracks in a high-speed railway station can be shared by trains arriving from both directions, we reschedule both inbound and outbound trains simultaneously by allowing them to share sidings. Based on a space-time network, an integer linear programming (ILP) model is formulated to minimize the train-deviation cost. As the ILP model is difficult to solve for real-world problems, we decompose it into many easy-to-solve subproblems by the alternating direction method of multipliers (ADMM) algorithm. Our model is tested on an abstract representation of the Chinese high-speed railway system to illustrate both the benefit of rescheduling trains in both directions simultaneously and the efficiency of the ADMM algorithm in train rescheduling.

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“…Constraint (25) makes sure that the maintenance start time of each segment track is within a given time range, and constraint (26) requires that both tracks in the same segment are maintained simultaneously. Constraints (27,28) calculate the absolute difference between the maintenance start times of consecutive segments.…”

Section: Station Capacity Constraintsmentioning

confidence: 99%

“…Thus, we conclude that our model can consider different passenger demands arising from different time periods, and obtain an acceptable train timetable and maintenance plan to provide managerial insights to the railway operators. For more passenger-oriented timetabling, we refer to Zhan et al ( 28 ).…”

Section: Case Studymentioning

confidence: 99%

Integrated Overnight Train Scheduling and Maintenance Planning for High-Speed Railway Lines

Wang

Shou-yi

Peng

et al. 2020

Transportation Research Record: Journal of the Transportation R

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Overnight high-speed trains are very popular and convenient for passengers in countries with a large territory like China. However, the overnight high-speed train operation inevitably conflicts with the regular evening maintenance. We focus on both overnight high-speed train scheduling and maintenance planning to eliminate the conflict. Because some of the daytime high-speed trains that run early in the morning or late in the evening also interact with overnight high-speed trains and maintenance, we also allow them to be to slightly rescheduled to improve both the quality of the overnight train timetable and the maintenance plan. Our integrated optimization problem is formulated as a mixed integer linear programming model, which can be solved efficiently by the commercial solver CPLEX. Finally, we validate our model on a large real-world case constructed based on the Beijing–Guangzhou high-speed railway line in China.

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Social equity-based timetabling and ticket pricing for high-speed railways

Cited by 29 publications

References 38 publications

Social Equity and Bus On-Time Performance in Canada’s Largest City

Social Equity and Bus On-Time Performance in Canada’s Largest City

Train rescheduling in a major disruption on a high-speed railway network with seat reservation

Integrated Overnight Train Scheduling and Maintenance Planning for High-Speed Railway Lines

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