Highway Mile Markers?

Question

are those mile markers you see on the freeway accurate? ive always wondered that but have never asked anyone. thanks

Answer 1

Yes, they should be accurate.

Answer 2

yes they are

Answer 3

They are pretty accurate and an easy way to check if your speedodometer is working proper. It should take 60 seconds at 60 mph inbetween them.

Answer 4

Yes....

Answer 5

Yes theyre close to accurate running S-N   W-E

Answer 6

Fairly close,  but can be off.   They were,  after all,  put out there by state workers,   or the highway may have been rerouted somewhere and the markers not changed.