Heavy weight of traffic travelling on M1 motorway in Hertfordshire, United Kingdom

air pollution automobiles backviews bridge bridges british scenes busy road busy roads carbon emissions carbon footprint city living conditions congested traffic congestion england english scene english scenes exhaust emissions flowing traffic fly over flyover fumes global warming great britain heading away heavy traffic homeward bound jams lorries major routes many vehicles overpopulated polluting environment population explosion population growth road trip rush hour rush hour slow crawl home stationary traffic tail backs tail back traffic flow traffic lanes transport transportation uk scene united kingdom vans vehicles volume of traffic back view cars daytime driving heading home horizontal journey journeys motorways moving outdoors outside rear view stock image stock photo stock photograph the road ahead the way forward travel travel photo travel photograph travel photography travel stock travels truck trucks travel destinations travel destination logistics supply chain infrastructure color image color colour tourism destination uk