Intelligent Transportation Systems

For all intersections identified in Table C-2 (PDF), as well as citywide, the city plans to implement Intelligent Transportation Systems (ITS) technologies to improve traffic flow. The application of ITS technology allows the city to control traffic by using advanced computer and communication technologies.


The goal of ITS is to reduce travel times, vehicle delay, and overall congestion. Additional benefits accrued from the application of ITS include safety and traveler information. A number of corridors and areas in the city are ideally suited for ITS application. These include Pomona Boulevard and Potrero Grande Drive and in the east and west grid of streets between Garvey Avenue and the San Bernardino Freeway. In the north in particular, the high concentration of commercial activity, closely spaced intersections, close proximity of the freeway, and limited availability of right of way make the area ideally suited for ITS application.

Advance Traffic & Traveler Systems

The City of Los Angeles Department of Transportation (LADOT) has invested extensively in ITS technologies through the application of the Automated Traffic Surveillance and Control (ATSAC) system and Advanced Traveler Information System (ATIS). The ATSAC system is an interconnected and coordinated signal system that automatically monitors and manages surface street traffic.

The ATIS application consists of electronic signage that can display changeable messages for such things as special events, traffic delays, or restricted turning movements. According to studies conducted by the LADOT, increases in roadway capacity by as much as ten percent can be achieved though the implementation of these signal system technologies. This gain appears in the form of less congestion, fewer delays, and less frequent stops at the intersection. Traffic flow is improved and in addition, system operations, monitoring, and control are significantly enhanced.