Truckers' Challenge: How Well Do You Know Big Rigs?Share:FacebookPinterestTwitterMail3. Where is the "fifth wheel" located on a semi-truck?12%Next Correct Incorrect The fifth wheel is mounted on the truck frame behind the cab to connect to the trailer kingpin. 3. Where is the "fifth wheel" located on a semi-truck? Behind the cab On the front bumper Under the rear tires On the roof 12%
