Rory Sutherland Rory Sutherland

Will self-driving cars know what to do in the middle lane?

The trick is that there's no one rule. Try doing that with an algorithm

[Getty Images/iStockphoto]

I am convinced that when I took my driving test in 1983 I was asked by the examiner, ‘What lane of a three-lane motorway should you use when driving at a speed of 70 mph?’ And I am equally sure that the ‘correct’ answer to this question at that time, as given by the early 1980s version of the Highway Code, was ‘the middle one’.

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