car traffic(n = noun.group) automobile traffic - cars coming and going;
is a kind of vehicle traffic, vehicular traffic

air traffic, armored car, armoured car, automobile traffic, baggage car, bicycle traffic, buffet car, bumper car, bus traffic, cabin car, cable car, car, car battery, car bomb, car boot sale, car care, car carrier, car company, car dealer, car door, car factory, car horn, car insurance, car loan, car maker, car manufacturer, car mile, car mileage, car mirror, car park, car part, car pool, car port, car race, car racing, car rental, car seat, car sickness, car tire, car train, car transporter, car wheel, car window, cattle car, chair car, club car, coal car, commuter traffic, compact car, dining car, drawing-room car, drug traffic, electric car, elevator car, estate car, foot traffic, freight car, gondola car, grip car, hire car, jaunting car, jaunty car, lounge car, mail car, motor car, narcotics traffic, nonsmoking car, observation car, pace car, palace car, panda car, parlor car, parlour car, passenger car, patrol car, pedestrian traffic, police car, prowl car, pullman car, race car, racing car, railroad car, railway car, refrigerator car, scout car, secondhand car, slave traffic, sleeping car, smoking car, sport car, sports car, squad car, stock car, subcompact car, tank car, touring car, tow car, traffic, traffic circle, traffic control, traffic cop, traffic court, traffic island, traffic jam, traffic lane, traffic light, traffic mile, traffic pattern, traffic signal, traffic with, trolley car, truck traffic, vehicle traffic, vehicular traffic