Why can it be an advantage for traffic speed to stay constant over a longer distance?

A: You'll do more stop–start driving

B: You'll use far more fuel

C: You'll be able to use more direct routes

D: Your overall journey time will normally improve

Hint

When traffic travels at a constant speed over a longer distance, journey times normally improve. You may feel that you could travel faster for short periods, but this generally leads to bunching and increased overall journey time.

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