When pulling forward on the “tug test” Gerry notices that the jaws have clearly not engaged. What should he do?

Explanation: • Reverse back faster to ensure the lock engages: No, this is likely to damage the jaws.
• Defect the tractor unit: No, it is unlikely to be a fault with the tractor unit.
• Defect the semi-trailer and transship the load: No, without investigating, it is impossible to say that there is anything wrong with the jaws or anything else.
• Pull out from under the trailer. Leave the cab and check the jaws for any problem: Yes, this is the best and safest action.

Category: CPC Case Studies: Vehicle Loading Unloading and Security