US 101 in Sonoma County-Ramp Meter Activation-Mon, April 13

State of California • Department of Transportation

TRAFFIC ADVISORY

Date: April 8, 2015
District: 4 - Oakland
Contact: Allyn Amsk
Phone: (510) 286-5445

FOR IMMEDIATE RELEASE

U.S. 101 in Sonoma County
Ramp Meters at Airport Boulevard to go Green Monday, April 13, 2015
Watch For New Signals at On-Ramps

SONOMA COUNTY – Next week the California Department of Transportation (Caltrans) will activate ramp meters for northbound and southbound on-ramps from Airport Boulevard to U.S. Route 101 in Sonoma County.

• Beginning Monday, April 13, 2015, ramp meters on northbound and southbound U.S. Route 101 at Airport Boulevard will be set to solid green during commute times to alert drivers to the new driving condition.

• On Tuesday, April 21, ramp meters will cycle through red and green in the morning from 6 a.m. to 10 a.m. and in the afternoon from 3 p.m. to 7 p.m.

• Caltrans will monitor the timing of the ramp meters and make adjustments as necessary.

What is Ramp Metering?
Ramp metering is a traffic management strategy using traffic signals and accompanying equipment and techniques to manage on-ramp flow on the freeway system. It is intended to improve the safety of vehicle merging and the flow of traffic on the highway.

Motorists at newly activated ramp locations may experience operational delays during the first few days of operation. Caltrans staff will monitor the metered locations and make adjustments, and then fine tune the metering operations.

Drivers entering U.S. Route 101 where ramp meters are activated should stop at red and wait until the traffic signal turns green to enter U.S. Route 101. Caltrans will monitor traffic conditions and operate ramp meters as appropriate.

Additional Information
Many of the on-ramps in Sonoma County have a carpool lane marked with a diamond. The carpool lane restriction for an on-ramp is 24-hours per day, seven days a week.

For more information, go to the Sonoma County Ramp Metering webpage at http://www.dot.ca.gov/dist4/101sonomametering/ . The Ramp Metering Information Line is: 510-286-4531.

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