The rear wheels of an unloaded vehicle equipped with an automatic load-dependent braking force regulator (ALB) lock each time the brakes are strongly applied. What can be the cause?

The selected combination is correct because both options address potential mechanical issues that can lead to the rear wheels locking during braking.

1. If the ALB (automatic load-dependent braking force regulator) is defective or incorrectly adjusted, it can fail to distribute braking force properly according to the load of the vehicle, which may cause the rear wheels to lock under heavy braking.

2. If several spring leaves on the rear axle have broken, this can also affect the suspension and load distribution, impacting how the braking system operates, further increasing the likelihood of wheel lock when braking hard.

In German traffic regulations, proper vehicle maintenance, including the functioning of critical components like the braking system and suspension, is essential for ensuring safety on the road. A failure in these systems can not only result in loss of control of the vehicle but can also pose significant risks to other road users. It is important to identify and address all potential causes to maintain compliance with traffic safety laws.