[Talk-GB] Implicit speed limits: What to tag in built-up areas?

[David Woolley]

On 02/05/18 12:06, Adam Snape wrote:
> Sorry, for clarity, both '20 mph zones' and '20mph limits' are actual 
> legal limits, not just advisory. In the former case, the sign on entry 
> to the zone coupled with the traffic calming is thought to be enough to 
> make drivers aware of the reduced speed required.

The traffic calming does not effectively reduce the speed to 20mph. 
What tends to happen is that vehicles accelerate to about 40mph between 
humps, then slam on the brakes.  It needs to be, and is, a legal limit, 
even though the police will rarely measure and enforce speeds on such roads.