Automatic Updating of Traffic Volume Data for Signal Timing Plan Development. Volume 1. Technical Report

摘要

The purpose of the research was to test the validity of using automatically-collected traffic volumes from selected system detector sites to generate a full TRANSYT-7F data file for calculating signal network timing plans. Termed the 1.5 GC control concept, the approach assumes that volume shifts on selected links will accurately represent shifts throughout the network. Tests were run at two significantly different test sites and included several detector placement scenarios. Results from multiple TRANSYT runs for both test sites strongly suggest that the 1.5 GC approach as simulated in the research is a viable alternative to the labor-intensive conventional field data collection currently used to develop TRANSYT-7F volume data files. This allows more frequent updates of timing plans to meet changing traffic conditions.