Final answer:
The permissible length for the connection or draw bar between a motor vehicle and a trailer, excluding pole trailers, should not exceed 5 meters as per most safety regulations.
Step-by-step explanation:
The question pertains to the allowable length of the connection or draw bar between a motor vehicle and a trailer. In most jurisdictions, this connection should not exceed a certain length to ensure safety on the road. Regulations often state that unless you are towing a pole trailer, the draw bar or other connection between the motor vehicle and the trailer should not be more than a specific measurement to prevent the trailer from swaying dangerously or becoming difficult to control.
The answer to the question is that the connection should not be more than 5 meters. This is a general safety regulation intended to minimize the risks associated with towing trailers on public roads.