RV LIFE Multisite Forum, Wander The West
height sensor
From a WSJ article that led me to 11foot8.com
The first is of a Travel trailer:
http://11foot8.com/camper-ac-ripped-off-at-the-11foot8-bridge/
The following included much more force.
http://11foot8.com/two-crashes-in-one-morning-at-the-11foot8-bridge/
Thank goodness for pop-up...