Intelligent systems for priority at traffic signals in London : the INCOME project.

Bus priority using selective detection has now been implemented at many isolated and coordinated traffic signals in London, including junctions under SCOOT UTC control. System evolution is now progressing to encompass new communications systems, advanced control strategies and integration. This paper describes this evolutionary process within the European Commission DGVII project INCOME. Summary results are presented from active bus priority field trials in fixed time and traffic responsive UTC. A new architecture for using Automatic Vehicle Location (AVL) to provide bus-specific priority levels according to individual bus requirements is then described, including off-line evaluation of associated headway algorithms. The paper concludes with an outline of other individual and integrated applications in INCOME to help buses in London. (A)