Class F -3- Braking Systems - Level 4 | Führerschein Österreich

Class F -3- Braking Systems - Level 4

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Category: Class F -3- Braking Systems - Level 4

You are towing an overrun braked trailer with a total weight of 7,000 kg with a tractor. What must you pay attention to?

Due to the steep and prolonged downgrade, I must drive slowly enough that the trailer brakes are not overloaded

Due to the high weight of the trailer, I must drive at least 40 km/h. Only this way are the trailer brakes adequately cooled by the airflow

Due to the steep and prolonged downgrade, I must drive slowly enough that the towing vehicle brakes are not overloaded

Due to the steep and prolonged downgrade, I must primarily use the engine braking of the tractor

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Category: Class F -3- Braking Systems - Level 4

A compressed air braked trailer is parked without a towing vehicle. You want to release the compressed air brake on this trailer. What sensible options do you have for this?

A pressure relief valve on the brake air reservoir

A release valve

An emergency release device on the Tristop cylinders

A brake valve

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Category: Class F -3- Braking Systems - Level 4

What types of wheel brake cylinders are common on agricultural trailers with compressed air brake systems?

Conversion cylinders

Diaphragm brake cylinders

Piston brake cylinders

Electric brake cylinders

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Category: Class F -3- Braking Systems - Level 4

When does the overrun brake of a trailer become effective?

When the electrical actuation is triggered

By a hand lever on the towing vehicle

When the trailer runs onto the braking towing vehicle

When the trailer moves away from the towing vehicle when starting off

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Category: Class F -3- Braking Systems - Level 4

An agricultural trailer is equipped with piston brake cylinders. What must you regularly check on these cylinders?

That the piston rod does not extend more than half the length of the piston cylinder during emergency braking

The tightness

The cleanliness

The condition of the cover of the piston rod

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Category: Class F -3- Braking Systems - Level 4

What problems can occur when you tow an overrun braked trailer?

The overrun brake is ineffective with the vehicle combination standing downhill

On longer downhill drives, the trailer brakes can overheat

The overrun brake is ineffective with the vehicle combination standing uphill

Since no "stretched" braking is possible, jackknifing of the vehicle combination can occur during hard braking

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Category: Class F -3- Braking Systems - Level 4

A compressed air braked trailer has a manually adjustable brake force regulator. The trailer is fully loaded. What consequences can it have if the brake force regulator is in this position during driving?

When the trailer tears away from the towing vehicle, the reservoir of the compressed air system of the trailer is suddenly vented

During braking, no braking effect of the trailer is achieved. This can cause the trailer to push the towing vehicle away

During braking, the braked wheels can lock. This can cause the trailer to skid

During braking, the braked wheels can lock. This can cause the trailer to push the towing vehicle away

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Category: Class F -3- Braking Systems - Level 4

A compressed air braked trailer separates from the towing vehicle. How is it ensured that the trailer comes to a stop automatically?

This causes the electrical control line for the ABS of the trailer to become currentless. Therefore the trailer control valve brakes the trailer

This causes the electrical control line for the EBS of the trailer to become currentless. Therefore the trailer brake valve brakes the trailer

This causes the supply line to become pressureless. Therefore the trailer brake valve brakes the trailer

This causes the brake line to become pressureless. Therefore the trailer brake valve brakes the trailer

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Category: Class F -3- Braking Systems - Level 4

You have uncoupled a compressed air braked trailer after a trip. Why is it not sufficient to just disconnect the brake air hoses from the towing vehicle to secure the trailer?

If the trailer is parked for a longer time, the brake valves become overloaded

If the trailer is parked for a longer time, the wheel brakes become overloaded

If the trailer is parked for a longer time, the supply pressure can drop

If the supply pressure on the trailer drops, the wheel brakes of the trailer release

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Category: Class F -3- Braking Systems - Level 4

What is an ABS on a trailer?

An anti-lock system for the trailer drawbar

An anti-lock braking system for the wheel brakes

A coupling aid

An automatic rotation control of the turntable

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Category: Class F -3- Braking Systems - Level 4

You are towing an overrun braked trailer with a tractor. Why can the trailer brakes overheat if you drive too fast downhill?

Downhill, the trailer brake is constantly applied by the trailer running onto the tractor

The material of the brake drums of the trailer has a lower quality than that of the brake discs of the tractor

Drum brakes on trailers are cooled significantly worse than brakes on tractors

The material of the brake discs of the tractor has a lower quality than that of the brake drums of the trailer

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Category: Class F -3- Braking Systems - Level 4

You have uncoupled a compressed air braked trailer after a trip. What must you do to secure the trailer?

I must check whether the trailer needs to be illuminated

I must apply the parking brake on the trailer

I must secure the trailer with the wheel chock

I must set the brake force regulator to the "Full" position

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Category: Class F -3- Braking Systems - Level 4

How does an ABS braking system on a trailer basically function?

Speed sensors provide the speed value for each individual wheel to a control unit during braking

When a wheel begins to lock during braking, the ABS control unit reduces the brake pressure on the affected wheel

When a wheel begins to lock during braking, the ABS control unit increases the brake pressure on the affected wheel

The ABS control unit measures whether a wheel begins to lock during braking

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Class F -3- Braking Systems – Level 4