This is undoubtedly a dangerous situation. You don't want to fall off a cliff! Under pressure, riders might let go of the bike or accelerate suddenly. The passenger should dismount. The rider makes a U-turn by bringing the wheel up to the side of the mountain, not to the edge of the cliff, so he won't ride off the edge if there are any mistakes such as sudden acceleration. By heading towards the side of the mountain the road rises a little and when reversing the motorcycle comes back into the right position.