Bobtail Liability is a term coined to cover the auto liability of the owner/operator after the load has been delivered and when the truck is not being used to carry the load. This usually occurs when the owner/operator is using their vehicle for mobility only (e.g. on their way home) and not in the process of transporting property for the road carrier under whose operation it is transporting and under whose liability policy. they depend as long as they are engaged in cargo transportation. The method of enforcing what is known as bobtail liability is a business auto policy (BAP) with TruckersisInsurance for Non-Tracking Use (CA 23 09) approval attached.