My rig is yust over 12' feet high, I have a good 35' foot tape, the ones that do not flex easy when extended and if I have a doubt about the height of an "arch or entrance" I get out and meashure before I turn in the drive way, that way I do not have to unhook the dinggy and back up.
When you get off the main roads and into the streets off the small towns, keep a constant skan HORIZONTALLY and also VERTICALLY, low tree branches and sometimes electrical wires.
The horizontal skan is for pedestrians that dart across in the middle of the street and bicycles that want to share your space no matter what may happen.
Buen viaje caminante
navegator