Because of narrow and winding mountain roads in these parks, longer vehicles often cross the double yellow line, posing a danger to other drivers. Because of this, advisories are in place on some park roads. Drivers will be held responsible for any hazardous conditions caused by their actions. Follow the recommendations below for your safety and the safety of others.
The section of the Generals Highway leading from the Sequoia park entrance to the Giant Forest sequoia grove was built in the early 1920s and connot accommodate longer vehicles.
Vehicles longer than 22 feet (6.7 m) are not advised between Potwisha Campground and the Giant Forest Museum in Sequoia National Park.
Vehicles longer than 24 feet (7.3 m) are not advised between the Foothills Visitor Center and Potwisha Campground in Sequoia National Park.
Crystal Cave Road
Vehicles longer than 22 feet (6.7 m) are prohibited on Crystal Cave Road. The road is open during cave tours and is gated each night after the last tour. Crystal Cave is generally open from May through late November, weather permitting.
Mineral King Road
This road is extremely narrow and winding and is unpaved in some areas. It's open from late May through October, weather permitting.
Moro Rock/Crescent Meadow Road Length Limit
Single vehicles longer than 22 feet (6.7 m) and towed units are prohibited during shuttle season, May through Labor Day weekend. In summer, park vehicles longer than 22 feet (6.7 m) at Giant Forest Museum and take a park shuttle.
Panoramic Point Road
RVs and trailers are prohibited on this extremely narrow and winding road.