SMART Overnight Testing for Larkspur Extension Starts August 23

Posted on August 23, 2019

SMART overnight testing

SMART is getting closer to opening its extension to Larkspur and will begin testing the train control and railroad crossing warning systems along the newly constructed portion of track from San Rafael to Larkspur. Track testing will take place on track segments between Mission Ave and Larkspur.

The overnight testing will take place between 9:30 p.m. and 3:30 a.m. on weekdays, and between 9:30 p.m. and 8:00 a.m. on weekends. Testing will begin on Friday, August 23, SMART will provide updates on the testing schedule.

Railroad crossings will be tested multiple times. As the train passes through the crossing, the train horn will be used, as required by federal regulations. For more information, please call (707) 794-3077 or email

Frequently Asked Questions:

Why are the SMART trains testing at night?



Why is SMART using the horn during nighttime testing?

The use of the horns during testing is required by the Federal Railway Administration.





Why does the Quiet Zone application end at Andersen Drive?



Where will track testing occur?



Who do I contact with questions about the testing program?


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