Illinois IDOT Class B Non CDL Permit Practice Test 2026 - Free Non CDL Practice Questions and Study Guide

To securely couple a towed vehicle to the towing vehicle, the use of two safety chains or cables is required. This is a safety measure designed to provide additional security and prevent the towed vehicle from becoming disconnected in the event of a failure of the primary hitch connection.

The use of two chains ensures that if one chain were to fail or come loose, the other would still maintain a connection, significantly reducing the risk of an accident and enhancing the overall safety of towing operations. Additionally, these chains should be crossed under the tongue of the towed vehicle, which helps keep the towed vehicle from completely detaching and reduces the likelihood of swerving or uncontrolled movements.

In contrast, other methods mentioned would not provide adequate safety measures. For example, relying on just one safety chain does not offer the same level of redundancy and security. Any strong connection could also prove insufficient if it lacks the necessary safeguards or fails without backup. As such, proper regulations and safety protocols dictate the use of two safety chains or cables for towing to maintain safety standards on the road.