Skip to Content
Streetsblog New York City home
Streetsblog New York City home
Log In
Los Angeles

Streetfilms: Behind the Scenes at LA Traffic Control

I have to admit: The thought of filming a control room designed to move vehicles more efficiently didn't excite me at
first. But once I met Senior Transportation Engineer Bill Shao and the
friendly staff at Los Angeles' Automated Traffic Surveillance and Control (ATSAC), I was full of curiosity.

Developed to help direct traffic during the 1984 Olympics, ATSAC has grown to monitor and control over 3,000 of
L.A.'s 4,100 signalized intersections, some of them incredibly complex.
ATSAC is one of the only such systems in the country that is publicly
owned, and the technology is so advanced that even on its busiest days the control
room only requires a few people to run it.

I'm told there are regular group tours of the facility. Next time you visit LA I recommend checking it out.

Stay in touch

Sign up for our free newsletter

More from Streetsblog New York City

Gov. Hochul Is Playing With Toys — And The Facts — In Latest ‘Propaganda’ Video on Car Insurance: Lawyers

The governor is still fighting to make it cheaper to drive with a reform that would reduce compensation to some crash victims.

February 23, 2026

Monday’s Headlines: Whiteout Conditions Edition

Lyft promised to have more crews shoveling out Citi Bikes this week than it did after January's storm. Plus more news.

February 23, 2026

STATE OF EMERGENCY UPDATE: Road Travel Ban Continues, Trains in Trouble

No travel on roads after 9 p.m., though Streetsblog's Emergency Weather Desk is now predicting 12 to 14 inches as of 1:30 p.m. on Sunday. Check back for updates.

February 22, 2026

Gov. Hochul Just Says ‘Way-No’ to Driverless Cabs Across NYS

The governor made the shocking choice to reverse her budget proposal that allowed companies like Waymo to expand throughout the state.

February 20, 2026

Friday Video: How Many ‘Better Billion’ Plans Are There?

Apparently, there are lots of better ways to spend $1 billion.

February 20, 2026

Friday’s Headlines: You’ve Gov To See It For Yourself Edition

South Bronx anti-highway advocates want Gov. Hochul to come see the site of her proposed Cross Bronx widening for herself. Plus more news.

February 20, 2026
See all posts