traffic calming
US /ˈtræf.ɪk ˌkɑːm.ɪŋ/
UK /ˈtræf.ɪk ˌkɑːm.ɪŋ/

1.
physical measures taken to reduce the speed and volume of traffic, especially in residential areas, to improve safety for pedestrians and cyclists
:
•
The city implemented new traffic calming measures, including speed bumps and narrower roads.
•
Residents requested more traffic calming in their neighborhood due to speeding cars.