Caltrans Transportation Department

Category: Department of Transportation

Address: 3161 Jefferson St, Napa, CA 94558, USA

Phone: +17072534919

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Questions & Answers

What are the rules for placing an address sign (numbers only) along a highway? Is there a setback distance from the shoulder white line?

Lynn Jemison | Aug 23, 2018

Don Gabbanelli | Aug 23, 2018

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What is maximum chain law

James Gleason | Aug 23, 2018

Don Gabbanelli | Aug 23, 2018

Vehicles are permitted in chaincontrol areas when equipped withchains or Auto- matic Traction Device (ATD) as indicated. Legaltread depth for mud and snow tires is 6/32” minimum. Trucks with cable type chains are legal inCalifornia. However, these trucks may be restricted at times due to local conditions.

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