Safe Speed Forums

Hot off the press, although I'm sure I've seen this mentioned somewhere else on SS?


"London cyclists could benefit from a 20mph speed limit under new plans.

Mayor Ken Livingstone announced plans for reduced limits across the UK capital at a press conference today.

Research has shown that 20mph zones cut accidents and injuries in half."



http://www.bikeradar.com/news/article/c ... ndon-14151

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The views expressed in this post are personal opinions and do not necessarily represent the views of Safe Speed.
You will be branded a threat to society by going over a speed limit where it is safe to do so, and suffer the consequences of your actions in a way criminals do not, more so than someone who is a real threat to our society.

Isn't this proposed 20mph limit going to conflict with these propsed low-emission zones in the capitol. The LA's can't have it both ways...or can they?

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Anyone who tells you that nothing is impossible has never bathed in a saucer of water.

in what way conflict ?

The snag is that generally a car moving at 30 mph produces less emissions compared with one moving at 20 mph. Of course if the average speed of traffic in the middle of London is around 11 mph, it's a bit academic.....

Apparently not. Study in Germany finds it causes less as there's less accelerating, less revving and less braking (leading to more accelerating).

Sure a car going at 30mph along a pefectly straight road, no slowing down or speeding up, compared to a car going at 20mph along the same straight road might emit less, but that's nothing like our urban environments at all.

A car accelerating to and decelerating from 30 between junctions emits more than the same car going up and down between 20.

Wish I could find the link now.