Quote:
Originally Posted by #-3
http://www.ibiblio.org/rdu/sl-irrel.html
Actually this study was on roads between 32km, and 89 km if you read the intro. So it directly effects our roads in the 30 -50 km range.
It said that the average speed limit in the US was in the 45th percentile of vehicles using the road.
As an experiment they were allowed to increase the speed limit on some of the roads to the 85th percentile, and they found that the fastest cars actually slowed down to near the speed limit, and safety improved by ~8%
Then they reduced some of the roads to the 33rd percentile, found it had no impact on speed and the safety decreased by ~5%.
the German one I was talking about was about residential areas, I can't find the study but here is an article on it. Basically saying removing signage, lights and restrictions improved safety for pedestrians, cyclists, and motorists.
http://www.csmonitor.com/World/Globa...town-finds-out
I'm going to read the studies you proved on slower traffic being safer, so I will not dismiss them.
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Interesting!
I wish I could know more about some of the variables and details of that first study, it's kind of funny that drivers seemed to go the exact same speed regardless of whether the limit was increased or decreased. I wonder why that is?
As for the second study, that's a neat idea. Though, it does say that the speed limit was universally set to 30km/h, so perhaps that's a promotion for a 30km/h limit in all residential areas? :P