Starting April 8, drivers on U.S. 101 in San Mateo and Santa Clara counties will see a new Adaptive Ramp Metering (ARM) system aimed at easing congestion, Caltrans announced. Caltrans, in partnership with MTC, VTA, and local agencies, is implementing real-time adjustments to metering lights, allowing smoother traffic flow from Sunnyvale to Brisbane.
The system will operate daily from 5 AM to 8 PM, with lights turned off overnight. The phased rollout will begin with activation from Sunnyvale to Redwood City, followed by expansions in May, June, and July, including weekend activations by September. This initiative promises safer roads, fewer collisions, and reduced emissions.
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