Edinburgh looks set to introduce 20mph zone across city

Sure, there are costs.

KSIs are pretty expensive as well, not to mention the chilling effects on more casual cyclists when they hear of another death.

Then you have further costs to health care due to fewer cyclists...

And so on.

Safe roads are cheaper than the alternative.

There are costs to introducing these 20 mph blanket rules:-

- the legal and admin costs of creating the legislation.

- then you need all the signage; Camden roads are covered in ringed "20 mph" paint markings.

- Then you need proper, active Police enforcement and political will / funding to keep applying enforcement.

No point in these new laws, unless its taken seriously, like the ASL boxes which seem to be completely unenforced in London, they are full of motorbikes, buses, cars leaving no space for cyclists.

Which makes me think just how much has been wasted marking the ASL boxes which has required road junctions to be completely remarked or rebuilt in some cases.

Aberdeen has had a blanket city centre 20mph limit since 2006 - don't think its enforced much at all. If I'm doing 20mph on my bike I get overtaken by loads of vehicles. You need good enforcement to make it work.

Bristol has had 20 mph limits across most of the inner city for a while now.

It didn't take long for the usual suspects to start clamouring that it was all a waste of time, "all the people I know think its stupid", and that they weren't going to obey the new speed limits because they're"stupid". I don't know if they thought that thinking it's a stupid limit somehow exempted them from the law?

We also get lots of letters to the local paper complaining about cyclists breaking the speed limit ("I was driving along at 12 mph in rush hour and some cyclist just went racing past me" type stuff...) and threatening unspecified vigilante action.

When driving, if you obey the speed limit and stay under 20mph, within literally seconds you will find some other car sitting about a foot from your rear bumper.

Ah well, Edinburgh has all that to look forward to

I live in Camden and the 20mph limit is a joke.

Shortly after its introduction the local police commander admitted to 'Camden new journal' newspaper he did not have the resources to effectively Police the new speed limits.

I ride through Camden borough every day to Docklands and all I see is a lack of Police on the streets, whether Camden or across London.

Today there was a Police team on commercial road doing security marking and Dr.bike; I expressed my view that there is simply not enough Police policing the traffic and motorists have realised this, no one disagreed.

5 minutes before this, by moor field eye hospital, a huge lorry with skip was inching forward into the ASL where 6 cyclists were waiting, I pulled alongside and driver clearly on mobile phone. He saw me and turned away but still on phone.

I warned all the cyclists to move away before he squashed them, he was still moving forward ended up 2 foot off the back wheel of a woman on a hybrid. I told the Police team about this, they suggested contacting the local station with time/date and details, said they could use CCTV and cell phone info to track the incident and prosecute.

The consultation of the existing trial left the local people feeling rather frustrated as they were roads left out of the trial which the community councils wanted included were left out due to objections from a bus company. There is the issue of enforcement, but overall the trial has been a success.

The main worry now is that the city wide consultation will be treated the same way as the trial consultation where people living next to busy roads will be ignored, as commercial interests take presidents.

It's just genius with all of this sign placing when there is no enforcement, utter waste of time.

Thought there were many instances when the police openly stated they would not enforce a 20mph zone so further evidence of it being another publicity stunt whilst not actually doing anything to control the 'harrassed motorist'.

Can you imagine if tax was collected in such a half arsed way? Just a sign put up somewhere asking you to pay your money in but with no tax officers to enforce?

That'll never happen of course - cash is important but lives are cheap.

We have had a 20 mph limit in the London Borough of Camden for several years and it has had zero effect on how people drive.

Excellent news. Delighted to read that so many more children are cycling to school in the '20 zone' areas.

If kids get used to cycling to school in all weathers from an early age then there's a good chance that they will view cycling as a viable means of transport for the rest of their lives.