Related by context. Frequent words. (Click for all words.) 73 congestion 63 traffic congestion 58 Traffic 54 Gridlock 53 congested 52 gridlock 50 ease congestion 50 Pollution 49 traffic jams 49 traffic 48 relieve congestion 48 Overcrowding 48 traffic snarls 47 Tolls 47 Commute 47 Commuting 47 Traffic jams 46 Speeding 46 congestion pricing 45 Air Pollution 44 rush hour 44 Parking 44 air pollution 43 bottleneck 43 Commuter 43 tolls 42 gridlocked 42 commuters 42 traffic jam 42 Emissions 42 bottlenecks 42 overcrowding 41 Potholes 41 Rail 41 commuter 41 Ridership 41 Bypass 41 Flooding 40 Air Quality 40 Snowfall 40 arterial roads 40 Commuters 40 Airports 40 HOT lanes 40 High Speed Rail 39 Smog 39 vehicular traffic 39 Freight 39 Delays 39 Mass Transit 39 Unhealthy 39 Connectivity 39 rail freight 39 commuting 39 commute 39 HGVs 38 decongest 38 Roads 38 motorways 38 freeways 38 Rubbish 38 roadworks 38 expressway 38 freight 37 Pedestrian 37 Traffic Control 37 tolling 37 HOV lanes 37 pollution 37 Infrastructure 37 arterials 37 roadwork 37 Outages 37 Speeds 36 Interchange 36 motorists 36 Asthma 36 Litter 36 Homelessness 36 Transport 36 Counterfeiting 36 smog 36 busway 36 HOV 36 Airfares 36 toll plazas 35 Smuggling 35 Northbound traffic 35 highways 35 Emission 35 lanes 35 commuter rail 35 roundabouts 35 Motorway 35 Piracy 35 Ports 35 carpool lanes 35 Drainage 35 Transit 35 toll booths 35 Corruption