Depends on how you define "safe."
It consists of two lane roads with not a lot of visibility, some sheer cliffs near the road edge, many animals in the middle of the road, and a lot of drivers that are not watching the road or other traffic.
If you drive with extra caution, it should not be a major danger.
It is probably best to NOT drive a motorcycle in Yellowstone like shown in the link below :^)
Yellowstone national park is in three states, Wyoming, Montana, and Idaho.
Yellowstone river
Yellowstone National Park has five park entrances, three in Montana and two in Wyoming, however, most of Yellowstone National Park and the "sites to see" are located in Wyoming. To enter Yellowstone National Park at the south entrance (in Wyoming), you travel through the Grand Teton National Park and the John D. Rockefeller Memorial Parkway, which makes it the best route to enter Yellowstone National Park.
Yellowstone is a national park in Wyoming.
Yellowstone National Park is a land park.
Yosemite National Park is in California. Yellowstone National Park is in Wyoming. People often get the names confused.
Established in 1872, Yellowstone National Park in Wyoming is the world's first National Park.
Yellowstone National Park.
Yellowstone is a National Park.
Yellowstone, which was established by Teddy Roosevelt.
Yes, it is in the Northeast Corner of the park. It is not a long drive to get out of the park through Cooke City but all that is considered Lamar Valley is within Yellowstone National Park.
Colorado Springs to Yellowstone: 579 miles Colorado Springs to Glacier National Park through Yellowstone: 1024 miles