Gang-Len Chang

Downloaded 13 times Technical Papers Abstract To minimize the likelihood of having rear-end collisions at signalized intersections, this study presents two algorithms for use with an actuated signal controller and the wide-ranger sensor, deployed for dynamic all-red extension. The first algorithm features its replacement of conventional gap-out control with vehicles detected in a field-calibrated dilemma zone and executes a phase transition only if no vehicle is within the detected zone.

Downloaded 0 times Technical Papers Abstract On-ramp merging areas are congestion-prone segments of freeways. Depending on the aggressiveness of the driving population and the congestion level, the speed variance among travel lanes due to lane changes and ramp-merging flows may be so significant as to affect the optimal settings of deployed traffic control systems, such as metering rates or advisory speed limits.