INJURED WAS RIDING IN THE PASSENGER COMPARTMENT OF MANTRIP. THE MANTRIP WAS BEING MOVED INTO A TURNOUT TO ALLOW ONCOMING TRAFFIC PASS. AS THE MANTRIP ENTERED THE TURNOUT , IT RAN OVER A CAR STOP. THIS CAUSED THE MANTRIP TO STOP SUDDENTLY THIS INJURED EE RESULTING IN A BRUISE TO LOWER BACK.