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Are studded snow tires, cable chains and automatic traction devices (ATDs) legal in California?

April 26, 2017ATD automatic cable Chains Devices Legal snow studded tires traction

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Are studded snow tires, cable chains and automatic traction devices (ATDs) legal in California?

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We provide a portion of the California Vehicle Code on tires and traction devices on our web site. For information on studded tires click on section 27454 and read 27454, 27454b and 27454e regarding studded tires. For information on cable chains and ATD’s click on 27459 and read sections 27459, 27459.5 and Section 605. “What are ATD’s?” Automatic Traction Devices (ATD) are traction devices that can be deployed by the driver as needed. They are used primarily on Emergency vehicles, such as fire trucks and ambulances, and occasionally school buses. ATD’s are sometimes installed on large trucks and a few of the snow plows in Caltrans’ fleet. Due to their initial cost and inability to be used on front-wheel drive steering axles, they are not normally installed or used on cars.