題目：Traffic Signal Performance Measurement Using High-Resolution Data: The SMART-SIGNAL System
報告人：Dr. Henry Liu, Associate Professor
Department of Civil Engineering
How to monitor the performance of urban arterials is a challenging task because operational data from traffic signal systems is neither stored nor analyzed, which prevents proactive management of arterial streets. The development of the SMART-SIGNAL (Systematic Monitoring of Arterial Road Traffic Signals) system fills in this gap. The SMART-SIGNAL system simultaneously collects event-based high-resolution traffic data from multiple intersections and generates real-time arterial performance measures including intersection queue length and arterial travel time. Methodologically, this project provides innovative solutions to two long-standing traffic engineering problems:?1) how to measure intersection queue length when the vehicular queue spills over to the detector location, and 2) how to estimate arterial travel time reliably. The development of the SMART-SIGNAL system has laid the groundwork for better traffic models and control strategies and opens up entirely new opportunities for managing traffic on congested roads.
Dr. Henry Liu is currently an associate professor of Civil Engineering at the