martine wrote:Horse wrote:Exactly. You're then getting into the nitty gritty of what is acceptable Vs worthy of prosecution - how close for how long?
Well yes but not insurmountable...it happens with speed offences - they have a 'tolerance' for prosecution after all e.g 10% + 2.
For tailgating I'd have though anything less than a 1 second following gap would be worthy of "falling below the standard expected of a competent driver". You get the gist and I believe it would be do-able.
Is the police-style overtaking preparation close 'contact' following position likely to fall foul of that sub-1s measure?
How have you arrived at 1s, why not use the 2s rule?
FWIW, IIIRC, a minimum of 15s close following was suggested some time ago as a suitable duration. There's a hitch there, of course: sub-1s at 50mph = measurement systems to be at one distance for 15s duration, but travel through at 100mph and they need to be twice the distance apart.