Paris city centre from 2021 Speed-30

There was even talk of a uniform 30 km/h speed limit in all city centres of the country at first, if a citizens' council had had its way. Specially appointed by President Macron for matters such as these, this Climate Citizens' Council made this incisive recommendation. But for the time being, only the capital should be affected by the new rule. And since French politics in general has the unique reputation, alongside countries such as Switzerland, of governing particularly "close to the citizen", an electronic citizens' survey will be conducted between 27 October and 27 November. However, for the Deputy Mayor of the city, David Belliard, the project of a Paris city centre with a complete 30 km/h zone is almost a done deal: "There are too many traffic accidents with sometimes dramatic consequences". He hopes that, in addition to falling emission levels, there will also be significantly less noise in the country's largest metropolis. However, examples from other major international cities also show that speed limits, as planned in Paris, do not automatically and congruently lead to lower emission levels.
Berlin, for example, had also placed great hopes in such reductions in the maximum permitted speeds in the city area, and secretly expected not to have to introduce unpleasant driving bans for certain motor vehicles along the Spree. 

We all know the end of the story: after a long and helpless winch, Berlin gave in to its fate and had to acknowledge that speed limits alone are not the universal answer to the problem, and in the end, grumbling, installed driving bans. Paris, however, has already taken farsighted precautions to at least minimise any possible chaos.