traffic jam noun

ADJ. long, severe

VERB + TRAFFIC JAM be/get caught/stuck in, sit in Our coach was caught in a traffic jam and got to Heathrow forty minutes late.

PREP. ~ on the … Police report severe traffic jams on the M25, with five-mile tailbacks in places.

traffic light (also light) noun

ADJ. amber, green, red | temporary There are temporary traffic lights because of the roadworks.

QUANT. set Turn left at the third set of traffic lights.

VERB + TRAFFIC LIGHT go though, jump He was stopped by the police for going through a red light.

TRAFFIC LIGHT + VERB change (to sth), go green, etc. A line of vehicles waited for the traffic lights to change. Stop when the lights change to red. | be (on) green, etc. The lights were on red but she didn't stop. | work The traffic lights weren't working.

PREP. at the ~s There was a hold-up at the lights.

traffic noun

1 vehicles travelling somewhere

ADJ. bad, busy, congested, heavy, thick | light | constant | fast, fast-flowing | slow-moving, sluggish | cycle, heavy goods vehicle, lorry, motor, road, vehicular, wheeled | foot, pedestrian | air, airline an air traffic controller | boat, maritime, river, sea | rail, railway | motorway | commercial, freight, goods, industrial, passenger | city, city-centre, local, town-centre, urban | international | commuter, tourist | rush-hour | holiday, summer | oncoming I stood waiting for a gap in the oncoming traffic. | through Through traffic is directed around the bypass. | northbound, southbound, etc. | one-way, two-way

QUANT. stream

VERB + TRAFFIC generate, increase Building larger roads could generate more traffic. | cut, reduce | slow down | block, hold up, obstruct, stop, tie up Traffic was held up for six hours by the motorway blockade. | direct | divert

TRAFFIC + VERB build up, thicken In the town centre, traffic was already building up as early as 3 p.m. | grow, increase Traffic has increased by 50% in ten years. | clog sth Traffic clogs the streets of the city centre. | thin Traffic thins noticeably after 9 a.m. | flow, move, speed, travel The road is being widened to keep traffic moving. | go by, pass | head We joined the traffic heading northwards on the motorway. | roar, rumble

TRAFFIC + NOUN accident | hazard Sheep are a traffic hazard in the hills. | chaos, congestion, disruption, delays, hold-ups, problems, queues | fumes, pollution | noise | flow, speed Widening the road would improve traffic flow. | levels, volume | calming, management, restraint, safety | sign, signal | laws, legislation, regulations | system | offence, violation | bollard, cone, island A traffic island at the junction separates left- and right-turning vehicles. | artery (formal), route | report, survey, update | cop, officer, police, policeman, warden | engineer, planner | duty a policeman on traffic duty

PHRASES the volume of traffic

2 messages, signals, etc.

ADJ. radio, telephone | data, voice | network | Internet, Net, site, Web, website Our company will help you generate site traffic.

VERB + TRAFFIC boost, build, generate

3 illegal buying and selling of sth

ADJ. illegal | arms, drug

PREP. ~ in sth the traffic in arms