Pickup trucks have evolved over the years, but the need to clearly designate a truck's capacity for work has been around for generations. Ford produced the F-1 pickup truck starting in the late 1940s.

For recreational vehicles like fifth wheels, travel trailers, or class C motorhomes, the rules vary by state. In MOST cases, if you’re towing a 5th wheel with a pickup truck (like a Dodge Ram or three ...