Last updated: April 5, 2024
Thing to Do
Winter Driving and Tire Chains in Yosemite

Snowy or icy road conditions are common in the mountains of California, including Yosemite, from fall through spring. When these conditions exist, federal regulations (in Yosemite) and state law (outside Yosemite) require that you use chains or cables in order to reduce the chances of accidents. Chain requirements are strictly enforced.
If you are visiting any location in Yosemite from November through March, you should expect chain requirements to be in effect, even if you only plan to visit Yosemite Valley and use the free shuttle. Any time chain controls are in effect, all vehicles must have chains in possession, including four-wheel drive and rental vehicles.
Chains are often required on roads both inside and outside of Yosemite from November through March, less often in October and April, and rarely in September or May. Because high-elevation roads receive more snow, chains are required on the Wawona Road (Highway 41), Big Oak Flat Road (Highway 120 from the west), and Badger Pass Road more often than on the El Portal Road (Highway 140), roads within Yosemite Valley, and the Hetch Hetchy Road.
Call 209/372-0200 (press 1 then 1) for updated road information inside the park. This recording is updated whenever road conditions change and is the same way in which park staff gets road information. This recording includes information about current chain requirements. Remember that conditions can change rapidly.
Keep in mind that these chain requirements are not unique to Yosemite and apply in all the mountainous regions of California. You may encounter chain controls even before you enter Yosemite. You can check on current chain requirements for the following roads outside of Yosemite: Highway 41, Highway 120, Highway 140, Highway 88, and US 50. You can also call 800/427-7623 for road conditions throughout California (these links and phone number do not provide information about roads within Yosemite).
For more information, download the park's accessibility guide [2 MB PDF], which describes access to areas, facilities, and services for people with disabilities.