Mayor Antonio Villaraigosa was expected to flip the switch on Tuesday on a final traffic intersection system that will result in the synchronization of all of nearly 4,400 traffic signals in Los Angeles.

The Automated Traffic Surveillance & Control (ATSAC) signal synchronization program was scheduled to be initiated at 9 a.m. at the northwest corner of S. Broadway and Martin Luther King Boulevard.

Officials said the completion of this project will increase travel speeds by 16 percent and reduces travel times by 12 percent...

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