There are more than 1,100 signalized intersections in San Francisco.
With the bond funding, the City is replacing the traffic signals to better manage congestion and improve the overall reliability of the Muni transit system.
The City has an ongoing program to replace and upgrade deteriorated and obsolete signal hardware.
Another goal of this program is to modify signal operations to improve safety and efficiency by installing high visibility signals. The San Francisco Municipal Transportation Agency works with partner agencies to repair and replace aged traffic infrastructure in order to reduce delays, increase reliability and improve access.
Replacing signals
The bond funding already has upgraded more than half of the 110 traffic signals identified for upgrades. The program is on schedule to complete the work in 2013.
The design phase for new traffic signals is 15 precent complete and is expected to be completed in mid-2013. The design and construction phases for traffic signal upgrades are being coordinated with Public Works' paving schedule.
Reducing delays
The San Francisco Municipal Transportation Agency maintains and operates nine subways and 24 surface light-rail stations; 6.6 miles of subways and tunnels; 80 miles of track for rail and cable car operations; 220 miles of overhead wires; thousands of buses, and other transit vehicles; as well as traffic signals, signs, parking meters, bike lanes, and transportation communications networks that are critical to the day to day functionality of the transit system.
The new transit signals give buses and street cars priority at intersections, reducing delays and congestion at red lights.