>> There's no meaningful difference between 20mph and 30mph (please spare me the figures on impact
>> speeds and the probability of injury or damage). I regard 20 limits as 30 limits.
>>
Sorry, got to bite on this.
Point 1: At 20 mph you stop almost instantly compared to 30. Take thinking distance out of the equation and even the old Highway Code figure show a stopping distance of 18 feet. That's probably down to one car length now with wide sticky tyres and advanced ABS.
Point 2: This won't apply to major roads which will remain at 40mph.
Point 3: There are barely any speed cameras on the 20/30 limit roads anyway so I can't see any issue with stepping on it at 5am if that's what you did in a 30 limit anyway.
Point 4: Traffic flow will probably increase overall; less bunching, easier for cars to pull out etc much like managed motorways.
Point 5: Like it or not, we have to share the roads. A decent cyclist can maintain 20 mph for short distances (ie between lights). So bikes no longer holding up traffic, less stupid overtaking, everyone happy.
Now all they have to do is ban minicabs from the Greater Manchester area...
Last edited by: Fursty Ferret on Tue 23 Jun 15 at 10:33
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