Optimal design of demand adaptive paired-line hybrid transit: Case of radial route structure

Chen, Peng; Nie, Yu

doi:10.1016/j.tre.2017.12.006

Cited by 35 publications

(32 citation statements)

References 32 publications

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“…(i) e comparisons between the exible transit system proposed in the paper and its variant [4,44] demonstrate that in low travel demand density areas, the exible transit network designed in this paper is advantageous over the xed one with a signi cant margin. is is inspiring because it means the design can be applied to a list of real-world instances.…”

Section: Sensitivity Analysismentioning

confidence: 92%

“…We further assume that the service is provided by identical vehicles in the following operating parameters: the cruising speed considering tra c signal and pedestrian interference, v(km/h); the stopping time per stop due to deceleration and acceleration, 1 s/stop ; the time to pick up and drop o a passenger, 2 s/pax . us the time per passenger stop is = 1 + 2 [44]. e street in the service area exhibits a ring-radial fashion.…”

Section: Letmentioning

confidence: 99%

“…As to the lateral distance per passenger, it is di cult to derive a compact formulation using analytical methods. Following Chen and Nie [44], we denote as the ratio between the total travel distance and the longitudinal distance of a trip per vehicle. As we know, the longitudinal distance of a round trip per vehicle in the th "tube" is 4 ( − (1/2)) , thus the total longitudinal distance per hour is…”

Section: A Derivationsmentioning

confidence: 99%

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Analysis of a Flexible Transit Network in a Radial Street Pattern

Shi

Gao

2020

Journal of Advanced Transportation

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Traditional transit systems are usually composed of fixed routes and stops, which are suitable in densely populated areas. This paper presents a reformulation of the flexible transit model developed by Nourbakhsh and Ouyang (2012) to adapt it to many low demand cities in the world, especially those characterized by radial street patterns. Unlike traditional ones, buses of the proposed transit network are allowed to traverse in a predetermined service area and their precise trajectories hinge on the exact locations of passengers. To identify the optimal topology structure of the flexible transit system, continuous approximation approaches are developed to explore the optimal value of design parameters of the whole system, defining the optimal network layout through minimizing its objective function. To exhibit its advantages, numerical experiments are conducted to compare the flexible transit system with its two variants. The results show that the flexible transit system proposed in this paper outperforms the other two variants. The higher the access cost is, the more it would tilt towards the flexible transit system with a significant margin. Besides, the flexible transit system in a radial pattern competes more effectively than that in a grid structure. This is encouraging because the proposed transit system can be applied in a number of real-world cases.

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Section: Sensitivity Analysismentioning

confidence: 92%

Section: Letmentioning

confidence: 99%

Section: A Derivationsmentioning

confidence: 99%

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Analysis of a Flexible Transit Network in a Radial Street Pattern

Shi

Gao

2020

Journal of Advanced Transportation

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“…Rahimi et al (2018) propose a model for the design of demandresponsive services. Chen and Nie (2018) present an alternative feeder service to complement a network composed by fixed routes. In Fan et al (2018), the authors propose a model for the design of bimodal transit networks.…”

Section: Transit Network Design Modelmentioning

confidence: 99%

“…To answer this question, in the current paper, a comparison among network structures is made considering a circular city characterized by a ring-radial street pattern. This is the other regular pattern widely found in urban areas (Dickinson 1961;Lynch 1962) and studied in transit networks (Vaughan 1986;Badia et al 2014;Chen et al 2015;Chen and Nie 2018). In order to make this alternative comparison, we adapt the pre-existing models to describe the operation of the different structures on that ring-radial street pattern: radial, direct-trip-based and transfer-based structures.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Bus Network Structures in Face of Urban Dispersion for a Ring-Radial City

Badia

2019

Netw Spat Econ

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This paper extends the discussion about the bus network design in face of the mobility patterns associated with different degrees of urban dispersion. Based on an analytical approach, a comparison of total costs among different network structures is made for a ring-radial city, which is the other most common regular city layout. The results clarify what structure is the best solution for different scenarios of dispersion and city and transport characteristics. Simultaneously, the effect of the street pattern on the applicability of each structure is evaluated comparing these results to a previous research for a grid city. Three basic structures are analyzed: a radial scheme, a direct-trip-based network, and a hybrid structure as a transfer-based alternative. Each structure is dominant for a specific range of dispersion: radial networks for scenarios of high concentration, direct-trip-based systems for intermediate degrees of dispersion, and transfer-based structures when the activities are decentralized. However, constraints on stop capacity modify these ranges. Each structure presents a different distribution of travel time in the transit chain and agency costs that determine the most competitive alternative. In addition, the behavior of the structures and the evolution of costs regarding urban decentralization are practically the same for both street patterns: system costs grow with increasing mobility dispersion, the range of applicability for each structure is the same, and changes in their applicability when main input parameters vary are very similar. Therefore, these results make it possible to generalize about the conclusions obtained independently of the street layout.

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