Alarm warns of trailer back-up maneuvers

July 1, 2003
Hendrickson has unveiled an automatic trailer back-up alarm system for improved awareness of backward vehicle movement in areas of limited maneuverability

Hendrickson has unveiled an automatic trailer back-up alarm system for improved awareness of backward vehicle movement in areas of limited maneuverability and visibility.

Trailer manufacturers can install the audible alarm system on new vehicles, or it can be purchased through the Hendrickson aftermarket network for retrofitting.

With rearward trailer movement, the system activates a loud warning sound to help alert bystanders and other drivers in areas such as congested dock operations and near crosswalks and walkways that the vehicle is moving in reverse.

A wheel-end direction sensor reads the ABS tone ring activating the alarm, a 97-decibel repeating pound pulse, after one-half of a reverse revolution of the tire. The alarm ceases two seconds after the trailer stops or immediately upon any forward movement.

This system comes in a kit, which includes a direction sensor, electronic control unit, wiring harness, and alarm. The electronic module features an additional output that may be wired for a warning or back-up light (not included in the kit).

The stand-alone, automatic system requires no communication with the tractor and has reverse polarity protection and reset fuses. For additional information, contact Hendrickson International, Trailer Suspension Systems, 2070 Industrial Place SE, Canton OH 44707-2641.

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