When driving a bus and preparing to overtake the vehicle ahead, is it mandatory to signal the maneuver?

Question

DentroTest · Accepted Answer

The General Traffic Regulations require any maneuver involving a lateral movement to be warned of with optical signals, sufficiently in advance (Article 109(1)), and, when overtaking requires it, to give warning before starting it (Article 84(1)). Therefore, if overtaking requires moving laterally, the bus driver must indicate it with the indicators, both when pulling out into the overtaking position and when returning to the lane afterward (Article 85(3)). Whether or not those following behind are hindered does not change the obligation to signal a lateral movement, which depends on the maneuver and not on that factor. And saying that signaling is never mandatory is false: optical warning is an obligation under the regulations.

When driving a bus and preparing to overtake the vehicle ahead, is it mandatory to signal the maneuver?

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