Assertion: cab | /r/HasProperty | knocked
Facets:
value: off of the frame
type: OTHER
Source sentences:
text: If attached to the frame behind the cab or sleeper of the tractor, in theory they protect the back of the cab from impact and if unable to stop the load coming through the cab, they cause the cab to be knocked off of the frame, rather than impale the cab and kill or seriously injure the driver.