WABCO TAILGUARD Manual Download Page 12

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TailGUARD™ for refuse collection vehicles

Here,

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three green LEDs stand for distances between 450 and 300 cm,

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three yellow LEDs stand for distances between 300 and 150 cm,

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and three red LEDs stand for distances between 0 and 150 cm.

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The red LEDs also have two different states:

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If the corresponding LED flashes, the distance is about 50 cm.

▪

If the LED lights up continuously, the distance is approx. 25 cm or less.

The Trailer Remote Control also emits acoustic signals via a built-in buzzer. Similar to parking aids familiar from

passenger cars, this signal is emitted at ever shorter intervals, through to a continuous tone, when approaching

an object behind the vehicle.
Note: The display and control unit is called a "Trailer Remote Control" because it was introduced with

TailGUARD™ for trailer vehicles, and because here it is the identical unit. In this configuration, however, the

device has nothing to do with trailer operations.
In certain countries, objects behind the vehicle can also be displayed by a corresponding flashing of the

vehicle's rear outline marker lamps instead of via the Trailer Remote Control.

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Second variant:

Usually, it is reasonably required that the system – in addition to the display and warning

function – also automatically stops the reversing vehicle when it reaches a certain preconfigured stopping

distance. For this purpose, the vehicle is autonomously braked via additionally fitted pneumatic valves. These

valves are controlled by the Electronic Extension Module.
The amount of controlled braking pressure is also dependent upon the actual vehicle speed so that the stopping

distance can be adhered to safely. For this reason, the Electronic Extension Module receives the speed signal

from the vehicle via a corresponding connection cable.
The Electronic Extension Module must also be connected to the vehicle electrical system with other special

cables, for example to control the stop lights during an autonomous braking action.

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Third variant:

Here, autonomous braking is effected by the vehicle's own service brake rather than with the aid

of separately fitted valves.
To do this, the vehicle manufacturer must have installed a corresponding electronic TailGUARD™ interface,

via which the Electronic Extension Module can send the required braking requirements to the vehicle's braking

system.

This function is available from 2017 as a special option for some towing vehicles produced by Mercedes-Benz.

Here, the Electronic Extension Module is connected with three special cables to the interface provided by the

manufacturer. This allows the exchange of other information, such as the vehicle speed, the driving direction,

and the distance to objects behind the vehicle.
With this third variant, the functional readiness of the system and the distance information are indicated on the

display on the vehicle's instrument panel. The acoustic warning is sounded via the already fitted speakers. This

obviates the need for the Trailer Remote Control.