Monday 18 January 2010 1.23pm
Quite possibly very little practical point in having them.
I can imagine a scenario where a reasonable person chooses to ignore a posted 20mph limit because it's clearly inappropriate. In fact, I was overtaken a while back in the 20mph zone down Harper Rd by a police minibus (not attending a scene. No sirens, no lights.)
One possible outcome, though, is that there's a big increase in people getting points on their license (if they do ever monitor and enforce). And if you ever get involved in an RTA, it's odds-on that you'll be "speeding" according to the new limits. Which will have bad consequences for your insurance.
...if you press it, they will come.