rush hour
noun /ˈrʌʃ aʊə(r)/
  /ˈrʌʃ aʊər/
 [countable, usually singular, uncountable]- the time, usually twice a day, when the roads are full of traffic and trains are crowded because people are travelling to or from work
- the morning/evening rush hour
 - at rush hour | in the rush hour Don't travel at rush hour/in the rush hour.
 - rush-hour traffic
 
Collocations DrivingDrivingHaving a carTopics Transport by car or lorryb2- have/own/(British English) run a car
 - ride a motorcycle/motorbike
 - drive/prefer/use an automatic/a manual/(North American English, informal) a stick shift
 - have/get your car serviced/fixed/repaired
 - buy/sell a used car/(especially British English) a second-hand car
 - take/pass/fail a (British English) driving test/(both North American English) driver’s test/road test
 - get/obtain/have/lose/carry a/your (British English) driving licence/(North American English) driver’s license
 
- put on/fasten/(North American English) buckle/wear/undo your seat belt/safety belt
 - put/turn/leave the key in the ignition
 - start the car/engine
 - (British English) change/(North American English) shift/put something into gear
 - press/put your foot on the brake pedal/clutch/accelerator
 - release the clutch/(especially British English) the handbrake/(both North American English) the emergency brake/the parking brake
 - drive/park/reverse the car
 - (British English) indicate left/right
 - (especially North American English) signal that you are turning left/right
 - take/miss (British English) the turning/(especially North American English) the turn
 - apply/hit/slam on the brake(s)
 - beep/honk/(especially British English) toot/(British English) sound your horn
 
- a car skids/crashes (into something)/collides (with something)
 - swerve to avoid an oncoming car/a pedestrian
 - crash/lose control of the car
 - have/be in/be killed in/survive a car crash/a car accident/(North American English) a car wreck/a hit-and-run
 - be run over/knocked down by a car/bus/truck
 - dent/hit (British English) the bonnet/(North American English) the hood
 - break/crack/shatter (British English) the windscreen/(North American English) the windshield
 - blow/(especially British English) burst/puncture (British English) a tyre/(North American English) a tire
 - get/have (British English) a flat tyre/a flat tire/a puncture
 - inflate/change/fit/replace/check a tyre/tire
 
- be caught in/get stuck in/sit in a traffic jam
 - cause congestion/tailbacks/traffic jams/gridlock
 - experience/face lengthy delays
 - beat/avoid the traffic/the rush hour
 - break/observe/(North American English) drive the speed limit
 - be caught on (British English) a speed camera
 - stop somebody for/pull somebody over for/(British English, informal) be done for speeding
 - (both informal) run/(British English) jump a red light/the lights
 - be arrested for/charged with (British English) drink-driving/(both US English) driving under the influence (DUI)/driving while intoxicated (DWI)
 - be banned/(British English) disqualified from driving
 
Oxford Collocations DictionaryRush hour is used before these nouns:- crowd
 - traffic
 - train
 - …