[Steeveedee]

Yup, under the right conditions they can pop off. One street has since been smoothed, but it used to be a real washboard. 45 MPH speed limit, but everyone (almost) slowed to 30, max. Many years ago a trailer came off the hitch and struck a power pole in front of the local Chevy dealer, and caught fire. Fortunately the FD was on it pretty quickly and only the pole was scorched.