Improved Estimates of Travel Time from Real Time Inductance Loop Sensors

摘要

The principle source of freeway data available to traffic management and travelerinformation systems in the Puget Sound region is the DOT inductance loop system. Traffic management systems and traveler information systems currently used in the Puget sound region, such as the 'FLOW' map and, the real time motorist information system (RTMIS) named 'Traffic Reporter,' (MJMB91) use this inductance loop data to determine the status of traffic in the freeway system. The report presents a methodology to convert the measured volume and occupancy to speed and travel time.