Trends in urban roadway congestion, 1982 to 1991

This research report represents the sixth year of a ten-year research effort focused on quantifying urban mobility. This study contains the facility information for 50 urban areas throughout the country. The study estimates the level of congestion in the seven largest Texas urban areas and 43 other areas representing a cross-section of urban areas throughout the country. Quantitative estimates of mobility levels allow comparisons of transportation systems in the various urbanized areas and assist the transportation community in analyzing urban mobility. The database used for this research contains information on vehicle travel, system length, and urban area characteristics from 1982 to 1991. This document, volume 1, contains the annual report.