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What may be the cause of automatic activation of the rail brakes?

Official question no. 7107

This question applies to categories: POZWOLENIE

Active navigation category: POZWOLENIE

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What may be the cause of automatic activation of the rail brakes?
1. Damage to the drive shaft in the rear wheelset.
2. Electrical damage to the converter.
3. Pulling of the safety brake lever by a passenger.