The Electrical Systems Branch consists of three groups: Field Systems, Communication Systems Support and Signal Operations.

Field Systems
The group is responsible for the operational support, maintenance, communication and training for the existing I-15 Reversible HOV lanes as well as for the hardware system requirements for the upgrade to the new I-15 Reversible Lane Control System (RLCS). They support the Electrical Maintenance and permits for technical issues dealing with Changeable Message Signs (CMS) and Highway Advisory Radios (HAR). For questions concerning these field devices or systems please contact David Pham at (858)467-3058.

Communication Systems Support
This group is responsible for the support and maintenance of more than 30 miles of a Fiber Optics based communication network. This network provides communications of Traffic Field Elements such as video cameras, ramp meters, traffic monitoring stations, traffic signals and CMS. The information gathered from these devices is transported to Transportation Management Center (TMC) with is co-located with the California Highway Petrol (CHP). Television Broadcast Stations, the local cities, counties and transit are some additional customers which use their services. For additional information call Anup Khant at (858) 467-4330.

Signal Operations
The Traffic Signal Operation Unit is responsible for the timing of 440 signals located on State Routes and Freeways Ramp Terminus. If you have a concern regarding the way a traffic signal operates, please call Cindee Feaver at (858) 467-3056. Our office hours are Monday through Friday: 7:30 AM to 3:30 PM.

If a State owned Traffic Signal in on red flash or malfunctions, please contact our Electrical Maintenance Office at:

The new 2070 ATMS Controller Unit is an advanced ruggedized field processor and communications system configurable for traffic management applications.  It is a multitaking unit in that it can control multiple traffic devices simultaneously.  It comprises of multiple Central Processing Units (CPUs) and functions unattended even under harsh conditions.  More Technical Specifications.

Related links:

Caltrans Engineering Service Center Electrical Testing Branch Home page:
http://www.dot.ca.gov/hq/esc/ttsb/electrical/electrical_index.htm