[Diddle E. Squat]

Whether 80 or 75, it pays to be cautious on I-10 in West Texas. There are apparently at-grade intersections on that part of the road.

No there are not.

[Tolerance Sucks Rocks]

From OKRoads.com:

There are several intersections along Interstate 10 between Van Horn and Sierra Blanca. This is the first one of them. This section of Interstate 10 is among the least traveled of the highway's length across the southern tier of the country. (Photo taken 3/14/04)

There is a picture of a yellow diamond-shaped sign clearly denoting an intersection on I-10.