The following hand signals are used as extra communication with tram drivers when necessary.

Signal v1: Hand gesture emergency stop
Wave both hands above the head sideways.
Tram driver makes an emergency stop

Signal v2: Hand gesture drive slowly
Move hand horizontal slowly up and down
Tram driver continues with slower appropriate speed

Signal v3: Hand gesture stop
Hand raised next to head.
Tram driver stops.

Signal v4: Hand gesture drive up to signaller
Move hand next to the head back and forth.
Tram driver may drive up to the signaller.

Signal v5: Hand gesture drive away from signaller
Move hand up and down as low and high as possible.
Tram driver may drive away from the signaller.

Wave both hands above the head sideways.