How should two strong safety chains be positioned to support the trailer's coupler?

The correct positioning of two strong safety chains is to have them crisscrossed. This configuration provides essential support and stability to the trailer's coupler during transport. In the event of a coupler failure where the hitch becomes detached from the towing vehicle, crisscrossing the safety chains creates a cradle effect. This allows the trailer to stay close to the vehicle, reducing the risk of it dragging on the road or swinging out of control, which could lead to accidents or further damage.

The crisscrossed arrangement also helps prevent the coupler from dropping to the ground, as the chains catch the weight of the trailer. Furthermore, the angles created by the crisscrossed chains can help distribute the load more evenly, adding an extra layer of safety.

Other configurations, like being side by side or positioned straight across, do not provide this same level of support and fail to mitigate the potential dangers of a trailer detaching while in motion. Parallel chains also lack the necessary tension to hold the trailer securely in case of a coupling failure. Thus, crisscrossing is the best practice for safety chains when towing a trailer.