Signal your intentions to other road users. That is to say when turning or adjusting laterally on the roadway. Holding your arm straight and parallel to the ground with open palm faced forward is much more clear and attention-grabbing than an arm halfheartedly lifted and held in position with a bent elbow. Before taking your hand off the handlebar, be sure to scan the road ahead for obstructions like stones, potholes, or anything that can jerk your wheel. Not only does signaling let them predict your next move, but it gives cyclists a reputation of courtesy.