Artificial intelligence is coming to one of California’s most congested highways, all in an effort officials say could reshape how the state fights gridlock and potentially save hundreds of millions in construction costs.

Monterey County made the move this week, rolling out a new adaptive traffic signal system along Highway 68.

Nine traffic signals between San Benancio Road and Josselyn Canyon Road started operating Monday under an adaptive traffic signal control (ATSC) system.

The launch followed months of field testing and calibration aimed at refining the technology. Getty Images

Monterey County made the move this week, rolling out a new adaptive traffic signal system along Highway 68.…