Class E (Truck) -7- Vehicle Technology - Level 1

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are pulling a trailer of vehicle class O2 with your towing vehicle of vehicle class M1. What minimum tread depth is required for the trailer tires?

4.0 mm

2.0 mm

3.0 mm

1.6 mm

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You want to connect the power cable of a trailer to a car. The socket on the towing vehicle has 13 contacts, the one on the trailer has 7 contacts. How can you establish a proper connection?

By connecting the cables directly

With a suitable adapter plug

By transmitting the current directly via the conductive drawbar

By short-circuiting the cables

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You want to mount studded tires on a registered trailer. What is the maximum permissible axle load this trailer may have?

Not more than 3,500 kg

Not more than 750 kg

Not more than 1,800 kg

Not more than 1,250 kg

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are checking the lighting system of a trailer. Why should you operate all lighting and signal equipment simultaneously if possible?

So I can detect any contact fault in the electrical system of the trailer

To check for sufficient luminosity

To conserve the battery of the towing vehicle

To check the turn signal indicator light

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are checking the lighting equipment of your registered trailer. What reflectors must this trailer have?

Two white reflectors at the front

Two white reflectors on the sides

Two red triangular reflectors at the rear

Two amber-red round reflectors at the rear

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

How can you determine the age of your trailer tires?

By the indicators on the tires

By an inscription on the side of the tire next to the designation "DOT"

It is stated in the registration certificate of the trailer

It is stated in the operating manual of the trailer

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are pulling a trailer with a towing vehicle of vehicle class M1. Must you carry a spare wheel for this trailer?

Yes, but only if the trailer is single-axle

Yes

Yes, but only if the trailer has more than one axle

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

How can you determine what the air pressure in the tires of your trailer should be?

From the operating manual of the trailer

From the approval certificate of the trailer

By inquiring at tire specialist workshops

It may be written on the trailer

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

Your towing vehicle is equipped with studded tires. You are pulling a registered trailer with it. Must this trailer be equipped with studded tires?

Yes, but only if it is a trailer of vehicle class O2

Yes

Yes, but only if the trailer is braked

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

What are clearance lights on a trailer?

This is another term for the side marker lights

This is another term for the tail lights

This is another term for the rear fog lights

These are two lights each visible from the front and rear that emit white light to the front and red light to the rear

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

What is the purpose of a sway damper on a trailer?

It reinforces the shock absorbers of the trailer

It reduces the tendency of the trailer to oscillate

It relieves the brake of the towing vehicle

It makes coupling the trailer easier

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

Why is correct tire pressure particularly important for a trailer?

With too low tire pressure there is a danger that tires will burst

With too high tire pressure the fuel consumption of the towing vehicle increases

With too low tire pressure the tire can easily become overloaded

With too low tire pressure the rolling resistance increases significantly

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

Why should you pay attention to the age of your trailer tires?

Because the approval of the tires expires after four years

Because dangerous cracks can develop through aging

Because tires harden over time and thus the transmittable friction forces become lower

Because old tires no longer have the required tread depth

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are checking the lighting equipment of your trailer. What reflectors must this trailer have on the sides?

Red reflectors

None

Amber-red reflectors

White round reflectors

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Category: Class E (Truck) -7- Vehicle Technology - Level 1

You are checking the lighting of your trailer of vehicle class O2. What lighting equipment is required at the rear of this trailer?

At least one rear fog light

An even number of tail lights

A license plate light

At least one amber-red work lamp

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Class E (Truck) -7- Vehicle Technology – Level 1