Optimization of bus stops layout under the conditions of coordinated control

Arterial coordinated control and transit signal priority are effective ways to alleviate traffic congestion. Transit vehicles must enter the bus stops for passenger boarding and alighting. The research of transit signal priority should consider the impact of bus stop locations under the condition of arterial coordinated control. The objective of this paper is to analyze and optimize the bus stops layout under the conditions of coordinated control. The restrictions of relocated bus stops on public transportation planning were explained, and the impact of relocated bus stop on bus trajectory and arterial coordinated control was analyzed. The simulated optimization method was applied to optimizing bus stops layout when compared with the mathematical optimization method. Then, the arterial simulation model with ten signal controls and eight bus stops was built, and typical layouts of bus stops were planned. One bus stop at one link was defined as "single" layout, near- and far-side bus stops at the same link was defined as "pairing" layout. Single layout for some bus stops and pairing layout for others defined as "mixed" layout. Simulation experiments of each layout at the same coordinated control and traffic volume were carried out, and performance index such as delay was evaluated. The simulation result shown that delay of all bus stops at pairing layout was less than all at single or mixed layout. Furthermore, the ideal layout module composed with three bus stops at some segments was proposed, and suggestion of relocated bus stops based on ideal layout module was presented. (C) 2017 The Authors. Published by Elsevier B.V.