Which of these brakes is a trailer of more than 750 kg NOT required to have?
Active and passive safety
Explanation
A **trailer over 750 kg** must have certain braking systems to ensure road safety. However, not all types of brakes are mandatory for these vehicles.
- **Service brake**: This is the main brake used to stop the vehicle during normal driving. It is essential for controlling the trailer while it is in motion and is mandatory.
- **Parking brake**: This brake is used to keep the trailer stationary when parked. It is crucial to prevent the trailer from moving accidentally when not in use and is also mandatory.
- **Emergency brake**: This type of brake is not mandatory for a trailer over 750 kg. The emergency brake is an additional system used in emergency situations, but it is not a legal requirement for trailers of this weight.
Therefore, the **emergency brake** is the only one of the three that is not necessary for a trailer over 750 kg.
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