Every week, it will monitor the evolution of nuisances following the increase to 50 km/h. The first feedback is positive.
The ring road bulletin allows you to compare the periods before and after the passage to 50 km/h – © SIPA
The speed of the Paris ring road, the busiest road in Europe (1.2 million daily trips, 80% of which are self-drive), dropped from 70 to 50 km/h on October 10, after a period of test from October 1 on a section between Portes des Lilas and Portes d'Orléans. This decision was highly contested, up to the highest level of the State – successive Ministers of Transport have criticized it – and by most local elected officials from the departments and municipalities of the inner and outer suburbs… but if we are to believe its initiator, the Paris town hall, it is already bearing fruit. The municipality does not rely on technology
with a wet finger to affirm it, but on quantifiable and verifiable data. A ring road bulletin has in fact been put in place to compare the periods before (in 2023) and after the transition to 50 km/h.
Noise and air measurement indicators
The report is based on a series of indicators measuring noise (thanks to Bruitparif), air quality (thanks to Airparif), accidents, traffic congestion, and average traffic speed. The bulletin from October 14 to 18 reported a reduction in noise (-0.6 dB) and speed at night, a 21% reduction in traffic jams and a 47% reduction in accidents, with air pollution remaining comparable. The previous bulletins were in the same vein, from the first bulletin, from September 30 to October 4: – 2.6 decibels, traffic jams decreasing by 37% and accidents by 68%… However, we will have to monitor the next bulletins to check if this improvement is lasting.
Other measures, such as the installation of sound-proofing coatings on 50% of the artery since 2020 (corresponding to sections close to inhabited areas), the revegetation of the surrounding areas and the central reservation until 2030, or the establishment from January 1, 2025 of the low emissions zone (ZFE) of the Greater Paris metropolis, which the city supports, contribute to these improvements.
F. H.
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