Avoiding low clearance obstructions with a
fifth wheel often means doing some trip planning
in advance. It is easy to get yourself into
a very tight spot if you are unaware of a low
clearance bridge on your route.
One of the ways to avoid low clearance bridges
is to use a GPS that has bridge height data
built in. The drawback to this system is that
not all bridges are in the system, especially
bridges that are on small roads into state parks
and back country campgrounds.
Another way is to use a Rand Mcnally road atlas
that truckers use to get low bridge data on
their route.
(Click image to view on Amazon)
A new device is the Giraffe G4 Overhead Collision
Alert System. This uses sonar to read the height
of an obstruction and alert you if your Fifth
Wheel is to high to pass underneath.
(Click image to view on Amazon)
Below is a video demonstrating the Giraffe G4
Overhead Collision Alert System.