traffic calming 
noun [mass noun]
The deliberate slowing of traffic in residential areas, by building road humps or other obstructions: [as modifier]: traffic calming measures...
- Residents are campaigning for traffic calming measures on a road where a four-year-old boy was killed.
- He called for the dangerous stretch of road to become a slow speed zone or for traffic calming measures to be introduced there.
- Illuminated signs and traffic calming measures have been used effectively in other areas of the country for many years.
Origin
1980s: translation of German Verkehrsberuhigung.
- passecalle
- Passe Crasanne
- Passe Crassane
- passed ball
- passed-down
- passed master
- passed-on
- passed-out
- passed-over
- passed pawn
- passeggiata
- passeguard
- passel
- passement
- passementerie
- Passendale
- Passendale, Battle of
- passenger
- passenger cell
- passenger coach
- passenger door
- passenger-kilometer
- passenger-kilometre
- passengerless
- passenger mile