Know Before You Go
Know Before You Go
Visit Yosemite in winter and you'll experience breathtaking beauty, snow-covered peaks, and an endless array of winter activities. However, mountain weather can be unpredictable and affect roads and transportation throughout the park.
For up-to-date information on Yosemite's road conditions, call the 24-hour National Park Service road status line at209.372.0200. Select option #1 from both menus. You can find additional information online onNational Park Service Yosemite Current Conditions.
Tire chains may be required depending on weather conditions. You must have chains when entering a chain control area even if you are driving a four-wheel drive or rental vehicle. NPS strongly recommends to have chains or cables in your possession during November through March, however, chain requirements can happen as early as September and late as May. Please keep in mind that chains are dependent on the weather condition and not time of year. Find more information atNational Park Service Tire Chains.
Because weather can change so quickly at Yosemite, and temperatures dropped quickly as you gain altitude, it's important to be prepared for any weather you may come across—especially if you’recross-country skiingorsnowshoeing. It's possible to be gliding along in the sunshine one minute and hunkered down for a squall the next. Always bring plenty of layers, extra food and extra water—even if you're just going out for a quick trip.
Winter Entrances
Three of Yosemite National Park's entrances stay open year-round: CA 41 from Oakhurst, CA; 140 from Mariposa; and CA 120 West from Groveland. Due to the amount of snow Yosemite Park gets each winter, certain roads are closed to vehicles until spring. See Road Access below for more information.
Winter Road Closures
The following roads close each winter. Closures typically begin in November and end in May.
- Tioga Road(CA 120 East) When Tioga Road is closed, there is no access to Yosemite's high country by car. The eastern entrances to the park at Lee Vining Canyon via Highway 395 is closed when the road is closed. Tioga Road typically opens in late May/June and closes in October/November.
- Glacier Point RoadWhen the Glacier Point Road is closed for the winter, the first 5 miles are plowed and maintained to provide access to Badger Pass Ski Area. The road beyond Badger Pass Ski Area is groomed for cross-country skiing. Glacier Point Road is typically closed Mid-December through March.
- Mariposa Grove RoadWhile Mariposa Grove Road is closed, visitors can travel the road on foot, snowshoes, or skis to access the Mariposa Grove. The distance from the parking lot at the road entrance gate to the Mariposa Grove is two miles.
Public Transportation
Public transportation to Yosemite Valley is available every day of the year, weather permitting. Once you're in the Park, the Yosemite Valley free shuttle bus also operates year-round. Find more information atPublic Transportationpage.
Road Condition Report:
Wawona Road (Continuation of Highway 41 from Fresno) |
Big Oak Flat Road (Continuation of Hwy 120 from Manteca into Yosemite Valley) |
El Portal Road (Continuation of Highway 140 from Merced) |
Hetch Hetchy Road(Open 8:00 am to 5:00 pm) |
Badger Pass Road |
Mariposa Grove Road |
Glacier Point Road(beyond Badger Pass Ski Area) |
Tioga Road (Continuation of Highway 120 through the park) |
Tire Chain Requirements
All vehicles entering Yosemite National Park during winter conditions must carry snow chains. Call (209) 372-0200, 1, 1, for the most up-to-date road info. See Tire Chains below for more information.
In severe winter conditions, using tire chains at Yosemite National Park is a requirement and is determined by the National Park Service. When entering a designated Chain Control Area, federal law requires that you carry tire chains in your vehicle at all times—even if your vehicle has snow tires and four-wheel-drive. The National Park Service can require snow chains on any vehicle on any park road at any time. If you don’t have tire chains, the park rangers will deny your entrance into the park. Traveling without tire chains in your vehicle—or on your tires when required—will result in fines up to $5,000.
There are three categories of chain requirements: R1, R2, and R3.
| R1 | Chains or snow tires are required on the drive axle of all vehicles. Two-wheel drive vehicles with snow tires that have an M+S rating and a minimum tread depth of 6/32 of an inch are okay to drive without putting on chains. |
| R2 | Chains are required on all vehicles except four-wheel / all-wheel drive vehicles with snow-tread tires on all four wheels. |
| R3 | Chains are required on all vehicles, no exceptions. Including those with four-wheel / all-wheel drive. |
Tire chains should be purchased before your winter trip to Yosemite National Park. Chains must be the correct size for your car's tires and installed on the drive wheels: on the front for front-wheel-drive vehicles and on the back for rear-wheel-drive vehicles. For cars with four-wheel-drive or all-wheel-drive, chains must be installed on one axle: either the front tires the back tires. While cable-type chains are acceptable, they don't provide nearly as much traction as traditional chains.
有关优胜美地境内的最新道路信息，请拨打209-372-0200。选择1，然后再次选择1，或者访问国家公园管理局的约塞米蒂路况页面。http://www.nps.gov/yose/planyourvisit/conditions.htm
For current road information outside of Yosemite National Park, call CALTRANS at: 1-800-427-7623 (1-800-GAS-ROAD).
Additional Information:
- Mud and Snow tires are typically designated with a "M+S" on the side of the tire, and must have a minimum tread depth of 6/32 of an inch to be legal. Studded snow tires may be used if the tires are also rated as snow tires. If not, the tires must be chained as studs do not replace chains. Studded snow tires are allowed, but still require chains in R2 conditions.
- Tire traction devices (chains) can be link chain, cable chains, and/or spider straps
- 任何总重量为10000磅的车辆都必须用链条固定——这适用于大型货车和卡车。
- All vehicles towing trailers must have chains on one drive axle of the vehicle, even with 4-wheel drive and snow tires.
- If the trailer has brakes, it must also have chains on one axle.
如果在约塞米蒂的雪路上开车让人害怕，you can leave your car on CA Highway 140 outside Yosemite in the town of El Portal at the public transportation bus stop and use theYosemite Area Regional Transportation Systemto travel into and out of Yosemite.
