Knowledge Resources

This report is one in a series that documents lessons learned from the US DOT Model Deployment Initiatives program. It reviews one component of the San Antonio MDI - the integration of a highly successful freeway management system with a newly deployed arterial system.

The San Antonio Medical Center Corridor is approximately 5.4 miles long by 1.2 miles wide. Travelers often use this corridor when there is a disruption of traffic flow on the nearby Interstate Highways 10 and 410 (I-10 and I-410).

The goal of this implementation was to develop more effective, coordinated management of roadway incidents and their associated delays. The project would integrate the new arterial management system along the corridor's Fredericksburg Road with preexisting freeway management system on a 5.4 mile section of I-10 and I-410. The arterial management system would consist of 10 loop stations, three camera systems, nine dynamic message signs, and a new arterial operations work station. Transportation staffs also created incident response signal plans to control the increased flow of traffic caused by an incident.

The lessons concern the benefits of integrated ITS systems and the related institutional issues that must be overcome to achieve effective integration across involved transportation agencies.