The government decided to the speed limit on the Paris ring to 70 km / hBut is it really a good idea?
Currently cars are designed for minimum consumption (100 km) traveling at a speed between 80 90 to km / h speed limit in 70 km / h is not a wise choice with respect to consumption energy and therefore of urban pollution.
The Strasbourg device is limited by place or to 90 70 km / h for some years. We have not (yet) found studies showing that this has had an impact neither on urban pollution or traffic congestion on the ...
Strasbourg another project planned to spend the whole city 30 Zone, it has (thankfully) not successful because there is a good chance for the reason cited above, that it would have improved neither traffic nor urban pollution.
Debate on forum: limitation to 70 km / h on the Paris ring road, a good idea?