The coordinated activation of both the tow vehicle’s and the attached trailer’s braking systems is critical for safe and controlled deceleration. The functionality allows drivers to manage combined vehicle weight effectively, especially during emergency stops or on steep declines. The process typically involves a controller unit installed within the tow vehicle, which allows the operator to manually apply or adjust the trailer brakes. For instance, increased controller gain settings are often needed when towing heavier loads.
Proper function and consistent application provides a substantial safety enhancement, minimizing the risk of trailer sway, jackknifing, and extended stopping distances. Historically, advancements in trailer brake technology, from simple surge brakes to sophisticated electric controllers, have significantly reduced accidents and improved overall towing safety. Consistent implementation and maintenance contributes directly to the preservation of cargo integrity and reduction in vehicle wear and tear.