Data Acquisition And Playback System For Traffic Signals

Download or read book Data Acquisition and Playback System for Traffic Signals written by Donald E. Scheck and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project met its objectives which were to develop a system to simulate actual traffic conditions in a controlled shop test of traffic signal installations and a system to evaluate coordinated traffic signal performance based on the actual flow of traffic through the intersections. The first system uses data from the traffic signal monitor/recorder which was developed under an earlier contract. A custom designed interface allows an IBM PC or compatible computer to drive a shop test with actual field data. This capability is especially useful for correcting difficult to diagnose signal failures. The other system consists of five data acquisition devices which collect synchronized time stamped vehicle actuations and green times from traffic signal installations and the software to display this information as a series of time-space diagrams. Data are plotted in the form of a standard time-space diagram with vehicle actuations shown along the bar of signal colors for each intersection. This type of display highlights the progress of traffic relative to the traffic signal cycle.