Except for a pole trailer, what is the maximum length permitted for a draw bar or coupling device between vehicles?

The maximum length permitted for a draw bar or coupling device between vehicles is 5 meters, which is aligned with regulations to ensure safe towing practices. This limit is in place to prevent excessive slack between towing vehicles, which can impact control and increase the risk of sway during transport. A draw bar that exceeds this length could create difficulties in steering and stability, potentially leading to hazardous situations on the road.

Maintaining the specified length helps ensure that the vehicles are closely linked, allowing for better maneuverability and stability, especially when navigating turns or stopping. The regulation is designed to promote safety for both the driver and other road users. The other lengths suggested do not comply with the established safety standards for towing, which is why they are not considered permissible limits.