Simulation-Based Optimization in a Bidirectional $A/B$ Skip-Stop Bus Service

Simulation-Based Optimization in a Bidirectional $A/B$ Skip-Stop Bus Service

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A two-way bus corridor system always suffers severe demand imbalance between their two operational directions during the peak hours.This paper intends to minimize the average passenger travel time by applying the A/B skip-stop strategy in such an imbalance situation.This strategy defined three types of stations: A, B, and AB.

In the service, the buses depart alternately from the original station as type A and B, and A (or B) buses serve A (or B) stations, as well as AB stations.Then the problem becomes determining samsung galaxy tab s7 fe 12.4 in. bundle, 64gb black the skip-stop patterns for both directions.A heuristic genetic algorithm is adopted to solve this problem with a kernel of a precise simulation model depicting the bus system.

Finally, we apply the optimization method to a realistic bus corridor of BRT line 1 in Beijing, China.Results demonstrate that the bidirectional A/B skip-stop service prevails over the unidirectional services applying A/B skip-stop only on one direction, and the common used regular service visiting all stations.It is certificated that the bidirectional skip-stop service reduces bus bunching, yields a more balanced bus load and provides a smooth bus service with essie pink glove lower cycle time and variability.

Moreover, a sensitivity analysis is conducted to show the impacts of some key attributes on potential benefits of bidirectional skip-stop service.Finally, the elastic demand case where transferring passengers may change their origins or destinations has been discussed.