This record contains 24 papers that explore different aspects of traffic signal systems and regional systems management. Specific topics addressed by papers in this issue of the TRR: Journal include detecting bicycles with inductive loop detectors, noncoordinated phases in coordinated traffic signal systems, traffic detection schemes at signalized intersections, flow-based traffic signal control, detection-control system for isolated high-speed signalized intersections, simultaneous gap-out logic, weather-responsive signal timing, and saturation flow at signalized intersections. This issue of the TRR: Journal also addresses design method for traffic control programs, an integrated arterial signal control model, traffic signal phase truncation in the event of a traffic flow restriction, robust real-time progression evaluation, system optimal signal optimization, microscopic simulation model calibration and validation, optimal detector location for transit signal priority, transition methods in traffic signal control, and more