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User Name Thread Name Subject Posted
BobL BS: 'Not so Smart' Motorways. (46) RE: BS: 'Not so Smart' Motorways. 13 Oct 18


The Highway Code recommends, IIRC, keeping a two-second gap from the vehicle in front. To my mathematical mind, this means a theoretical maximum flow rate of 1800 vehicles per hour per lane. You can get closer to this with higher speeds, when the 2-second gap distance is large compared to vehicle lengths.

N.B. I did say "theoretical".


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