scholarly journals Waiting time and headway modeling considering unreliability in transit service

2022 ◽  
Vol 155 ◽  
pp. 219-233
Author(s):  
Mohammad Ansari Esfeh ◽  
Saeid Saidi ◽  
S.C. Wirasinghe ◽  
Lina Kattan
2015 ◽  
Vol 27 (3) ◽  
pp. 205-216 ◽  
Author(s):  
Bin Yu ◽  
Keming Wang ◽  
Zixuan Peng ◽  
Can Wang ◽  
Ziyou Gao ◽  
...  

This paper presents a dynamic extra buses scheduling strategy to improve the transit service of transit routes. In this strategy, in order to decide when to dispatch an extra bus, the service reliability of transit route is assessed firstly. A model aimed at maximizing the benefit of the extra buses scheduling strategy is constructed to determine how many stops extra buses need to skip from the terminal to accommodate passengers at the following stops. A heuristic algorithm is defined and implemented to estimate the service reliability of transit route and to optimize the initial stop of extra buses scheduling strategy. Finally, the strategy is tested on two examples: a simple and a real-life transit route in the Dalian city in China. The results show that the extra buses scheduling strategy based on terminal stops with a reasonable threshold can save 8.01% waiting time of passengers.


2021 ◽  
Author(s):  
Lynn Scholl ◽  
Felipe Bedoya-Maya ◽  
Orlando Sabogal-Cardona ◽  
Daniel Oviedo

As transit ridership continues to fall in many cities across the globe, key policy debates continue around whether Uber and other ride-hailing services are contributing to this trend. This research explores the effects of the introduction of ride-hailing to Colombian cities on public transportation ridership using Ubers timeline as case study. We test the hypothesis that ride-hailing may either substitute or compete with public transit, particularly in cities with large transit service gaps in coverage or quality. Our analysis builds on historic transit ridership data from national authorities and uses a staggered difference-in-difference model that accounts for fixed effects, seasonality, socioeconomic controls, and the presence of integrated transport systems. Despite large reductions in transit ridership in most cities, our results suggest that Uber is not statistically associated with the observed drop in ridership. Moreover, consistent with evidence from previous research, public transit reforms implemented between 2007 and 2015 throughout Colombian cities appear to have contributed substantially to the declines in transit ridership observed across the country. Findings in this paper inform policy-targeted insights and contribute to current debates of the links between ride-hailing and public transit in cities in Latin America.


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