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Old June 1st 07, 01:20 AM posted to uk.transport.london
John Rowland John Rowland is offline
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First recorded activity at LondonBanter: Jul 2003
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Default Petition - M3 single lane restriction at the M25 Junction 12 and M3 New Road Layout Project

Rob (UK) wrote:

To quote Jeremy Clarkson he said that "If you reduce the
number of lanes from 2 to 1 then you have to double the speed to get
the same number of cars throug per hour",


Clarkson is having fun at your expense. The stopping distance at 70mph is
approximately double the stopping distance at 50mph, so more cars per hour
can fit through at 50mph. This is why too much traffic causes vehicles to
slow down rather than speed up.