Issaquah Transportation Advisory Board Meeting - April 22, 2026

The City of Issaquah Transportation Advisory Board met on April 22, 2026, to discuss the Adaptive Signal Feasibility Study focused on evaluating the potential implementation of adaptive signal control technology on key arterial corridors. The meeting included a detailed review of draft performance metrics and measures, addressing technical feasibility factors such as signal timing constraints, detection technology compatibility, communication reliability, and maintenance needs. The board also considered outcome metrics related to pedestrian and bicycle experience, driver experience, and transit rider experience, emphasizing the importance of balancing these factors in the cost-benefit analysis planned for phase two of the study. Discussions highlighted the need for corridor-specific weighting of metrics and the potential integration of adaptive signal standards into future development requirements. Additionally, the board addressed procedural matters including the upcoming interim chair and vice chair elections and updates on transportation improvement plans and Sound Transit light rail developments. No contract awards or specific procurement actions were taken during this meeting, but the study's progression and potential future investments in adaptive signal technology were key topics.