Abstract
In urban areas, rail transit construction affects the travel time and the efficiency of bus lines along the surrounding roads. To ensure service qualities, this study proposes a two-stage optimization method for bus rerouting to alleviate the impact of rail construction. In the first stage, the effect of the construction on bus operation is evaluated based upon one indicator, namely the increased rate of bus turnaround time. The affected lines that need rerouting are sifted by the indicator. For each rerouting line, we design two adjustment patterns and associated candidate alternative rerouting sets. In the second stage, the bus network alteration optimization model is developed to maximize the number of passengers served. The model considers several practical constraints, including service connectivity, rationality of bus travel time, and budget for building new bus stops. It realizes a systematic optimization of bus rerouting lines affected by rail transit construction. The proposed method is applied to Ning-Ma intercity railway in Ma’anshan, China to analyze the impact of construction on the surrounding bus lines and obtain the optimal adjustment scheme. The results show that the proposed method is capable of effectively reducing the negative effects caused by rail transit construction and meantime guaranteeing bus service quality.
Highlights
Rail transit routes are usually constructed along the passenger corridors to ensure attracting sufficient passengers when they are in operation [7]
As the construction period lasts for a long time, it brings troubles to the operations of bus lines which pass through road segments with work zones
Passengers who originally take bus lines nearby work zones may switch to other bus lines or other modes of transport due to dust, noise, and congestion resulting from rail transit construction
Summary
Bus is a basic mode of urban transit, which establishes the initial network structure for a city’s public transport system (e.g., Ibarra-Rojas et al, 2015; [1–6]; among many others). E construction of rail transit generally forms several work zones, which occupy the road resource and influence the operation of ground transportation [8]. During the rail transit construction period, bus lines may be influenced in terms of both travel time and efficiency when passing the road segments nearby work zones. It proposed a method to evaluate the performances before and after the implementation of the bus routing scheme It is not capable of generating the set of candidate rerouting plans for affected bus lines and meantime optimize the bus rerouting scheme of these lines, which is addressed in this study. E primary objective of this study is to propose a twostage optimization method to generate a bus rerouting scheme and alleviate the impact of rail construction.
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