| Subject | English | Catalan |
| environ. | traffic control The organization of a more efficient movement of traffic within a given road network by rearranging the flows, controlling the intersections and regulating the times and places for parking | control del trànsit |
| environ. | traffic control measure Means of controlling the number and speed of motorvehicles using a road | mesures de control del trànsit |
| environ. | traffic noise control Traffic noise can be controlled by reduction at source, by fitting motor vehicles with silencers, by installing barriers which interrupt the direct path of sound or by insulating dwellings exposed to high noise levels, such as those related to motorways or airports | control de soroll del trànsit |