interesting facts about a road trip to National Parks, you better know the legal limits of the vehicles they will allow in...

21 feet long, 10 feet high or 8 feet wide, because of tight corners and narrow roadways on a cliff’s edge, with no shoulder, and oncoming traffic sharing the road

That's the limits for Glacier Natl Park in Montana

And I figure the largest allowed in any park, is the restriction for the largest I ought to even consider... you know, if I were going to road trip. 

So, no point in thinking of a big rv rental, or truck hauling an Airstream. 

Tear drop it is! 

https://365traveler.com/going-sun-road/