Crossing traffic - If you can walk across the gap, then you can drive across it – this is traffic coming from the right. Make sure that you don’t make the traffic on the left slow down for you. If the gap is big enough for you to get out on the road and get up to speed then it is okay to pull out. You must bear in mind that it takes time to complete the steering manoeuvre safely. You need to accurately assess the speed of approaching traffic. If in doubt, wait! - The Official DSA Guide to Driving - The Essential Skills.
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