Abstract
The Roadway Environment Data Subsystem of the State Traffic Records System is designed to provide an inventory- of the State primary and secondary roadway facilities. The subsystem consists of a roadway location directory file, a basic roadway characteristics file, an intersection characteristics file, a bridge structure inventory file, and a roadway location history file. The data contents of the five subsystem files are summarized and detailed recommended coding formats and codes for the data elements contained in the subsystem files are described.