In London, the day they turned the congestion pricing on, there was a 25 percent decrease in congestion overnight, and that's persisted for the four years in which they've been doing congestion pricing.
Le jour où le système de péage a démarré, les embouteillages ont diminué de 25 % d'un coup. 4 ans plus tard, le péage urbain continue de donner ces bons résultats.