Overview
- AirParif reports average nitrogen dioxide concentrations fell about 6% along most sections following the 50 km/h limit and a new reserved lane.
- The agency attributes a roughly 4% reduction in vehicle counts to the policy package, with no measurable spillover of traffic or pollution to nearby roads or the A86.
- Levels of fine particulates PM10 and PM2.5 show no discernible decline, which AirParif links to multiple sources and the modest scale of traffic change.
- Apur and BruitParif find an average 2.7 dB drop in road noise, about 14% fewer congestion hours, and a similar reduction in accidents.
- Regional president Valérie Pécresse denounces the measures as socially costly, cites a barometer claiming users lost 20,000 hours per day, and renews her push for regional control of the roadway.