Final answer:
When backing out of an angled parking space on a road with two-way traffic, you should slowly back up while looking over your right shoulder to safely observe traffic in the lane you are entering.
Step-by-step explanation:
If you want to back out of an angled parking space on a road with two-way traffic, always back slowly and look over your right shoulder. This is because when you are backing out to your left (as you typically would in a right-hand drive vehicle in countries where you drive on the right side of the road), looking over your right shoulder gives you the best view of traffic coming in the lane you are entering. Be sure to also use your mirrors and check for pedestrians and other obstacles.