Simulation of Operational Effects of Blip-St with Moving Gap Constraints and Cav Platoon Coordinated Lane Changing

Abstract

Bus lanes with intermittent priority (BLIP) are designed to optimize road resource allocation. The advent of connected and automated vehicles (CAVs) enhances the implementation of BLIP. However, it is crucial to find an effective method to intermittently grant right-of-way to CAVs. In this paper, we introduce a BLIP method with spatio-temporal clear distance (BLIP-ST) alongside a CAV control method. This control method involves two key components: managing the entry of CAVs into bus lanes and their exit. The entry control considers moving gap constraints, while the exit control involves coordinated lane changing of CAV platoon with varying quantities. To achieve this, we developed an open-boundary traffic flow cellular automata model incorporating seven types of car-following modes and two types of lane-changing modes. We then simulated four different strategy cases to analyze the operational effects. The results demonstrate that BLIP-ST significantly enhances road traffic efficiency. Furthermore, coordinated lane changing within CAV platoons proves more effective than individual CAV lane changing.

Keywords: bus lane, CAVs, coordinated lane changing, traffic simulations, operational effects