Are snow socks a legal alternative to chains in California in 2025?
Snow socks are now recognized as legal traction devices in California—if they meet Caltrans standards. Here’s how to use them safely and when traditional chains might still be required in 2025.
Snow socks—also called textile snow chains or snow tire socks—are gaining traction (literally and figuratively) as a lighter, easier-to-install alternative to traditional metal chains. But are they legal to use in California chain control areas? Here's what you need to know for 2025.
Pat Sharyon
Curious how snow socks compare to chains? Check our complete California snowy-weather driver guide.
What Are Snow Socks?
Snow socks are fabric-based traction devices that slip over your vehicle’s tires, similar to putting on a fitted tire cover. They are made from woven textile materials designed to improve grip on snowy or icy roads.
Unlike metal chains, snow socks don’t produce noise or vibration and are often easier to install. However, they may wear out faster and are less effective in deep snow compared to traditional link-type chains.
Caltrans Rules on Snow Socks
Caltrans permits Alternative Traction Devices (ATDs), which include textile snow chains like snow socks, as long as they meet the standards set in California Vehicle Code Section 605.
“Vehicles are permitted in chain control areas when equipped with link-type chains or Alternative Traction Devices (ATD). Examples of ATDs include... textile snow chains.”
That means snow socks are generally allowed, but field enforcement is key:
- CHP and Caltrans chain control personnel have the final say. They can prevent a vehicle from entering chain control areas if they believe the traction device is insufficient for current road conditions.
- The snow socks must be properly labeled, durable, and manufactured to comply with CVC §605.
When Should You Use Snow Tire Socks?
Snow socks are ideal for:
- Short distances or light snow conditions
- Icy roads where a full chain setup is unnecessary
- Drivers looking for an easier installation process
However, for more extreme weather or off-highway conditions, traditional chains or heavy-duty alternatives are still recommended.
Best Practices for Using Snow Socks
- Always carry chains in addition to snow socks when entering a chain control area.
- Remove snow socks before driving on dry pavement to avoid excessive wear.
- Check the fit: Make sure they’re snug and correctly aligned before driving.
- Follow speed recommendations—usually 30 mph or lower.
Are Snow Socks a Legal Chain Alternative in California?
Yes—but with caveats. Snow tire socks are considered legal in California if they qualify as ATDs under California Vehicle Code §605. They may be denied under certain severe weather conditions, so always carry backup chains when traveling through mountain regions.
