iFahrer - Führerschein Vorbereitung APP
Interactive preparation for the driving license test
Technical aspects / 2.7.06-306
In which cases must you activate the release valve?
When the air tanks are full, the brake lines are not connected and the trailer has to be moved
Before setting off, so that the air tanks of the trailer can be filled
Before setting off, so that the parking brake of the trailer can be released
When the air tanks are full, the brake lines are not connected and the trailer has to be moved
Before setting off, so that the air tanks of the trailer can be filled
Before setting off, so that the parking brake of the trailer can be released
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