US Patent 7,905,555

A yaw control system capable of detecting a predetermined yaw angle of a towed vehicle and then automatically communicating with a braking system of the towed vehicle includes an actuator and a switch. The actuator and switch operate to detect when a towed vehicle, such as a trailer, has exceeded a predetermined yaw angle. In one embodiment, the yaw control system includes a switch arranged to contact a surface of a plate (i.e., actuator) when the towed vehicle exceeds the predetermined yaw angle. In another embodiment, the yaw control system includes a switch mechanism arranged to contact retractable rods (i.e., actuator) coupled to a hitch assembly when the towed vehicle exceeds the predetermined yaw angle.

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