My 5vr measures 13' 4" at the top of A/C Unit.
For 7 yrs. we traveled all over the USA on secondary/back-roads cause I hate Interstates.
Three times we came upon overpasses that were too low (well actually we were to tall). All were clearly marked long before we actually came to them.
Big deal.....NO. Turned around and went a different way.
One CG we stayed in in NH clearly stated on their website to NOT go by GPS or come in from northern route....low bridge.
A evening stroll thru campground it was clear who didn't heed warning or pay attention. :S