What Will Happen When All Paris Traffic Slows To 19 Miles Per Hour?

Sixty percent vehicles in Paris run on diesel, and the city is struggling to curb emissions--banning half its cars for a day , making public transport and bike shares free for a weekend , and pedestrianizing large swathes of the urban grid. Now, a new proposal by Mayor Anne Hidalgo will cap the speed limit at 30 kilometers (about 19 miles) per hour. For the entire city.