Air pollutionHungary

An introduction to the traffic rules and road signs of Hungary. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

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62. Air pollution

Air pollution is the presence of gases, particles or other substances in the air at concentrations that can harm human health, the environment or ecosystems. Road traffic contributes to air pollution through exhaust emissions and through non-exhaust sources such as brake wear, tyre wear and road dust.

Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Some pollutants are emitted directly by vehicles, while others can form in the atmosphere through chemical reactions. Vehicle-emission standards, cleaner technologies and traffic-management measures are used to reduce these emissions.

Air pollution
Black smoke emitted from a vehicle exhaust on a road in Kamonyi District. (Rwanda)
Wikimedia.org • Emmanuelkwizera • CC BY-SA
What is air pollution?

Air pollution is the presence of harmful gases, particles or other contaminants in the air. Road transport can contribute through engine emissions, vehicle wear and dust; the sources and pollutants differ by vehicle and conditions.

🔗 epa.gov • US EPA, smog and vehicle emissions

🔗 epa.gov • US EPA, Particulate Matter Basics

🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources

🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension

How does road traffic cause air pollution?

Vehicles with combustion engines can emit exhaust pollutants. Road traffic also produces particles through brake, tyre and road-surface wear and can stir up road dust. Vehicles without tailpipe emissions can still contribute to these non-exhaust sources.

🔗 epa.gov • US EPA, smog and vehicle emissions

🔗 epa.gov • US EPA, Particulate Matter Basics

🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources

🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension

Which air pollutants are associated with road traffic?

Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Their relative importance depends on the vehicle, fuel and driving conditions.

🔗 epa.gov • US EPA, smog and vehicle emissions

🔗 epa.gov • US EPA, Particulate Matter Basics

🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources

🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension

1 Hungary 2 Motorway 3 Residential area 4 Zone 5 Speed limit 6 Bike path 7 Pedestrian warning 8 Pedestrian zone 9 Slope 10 Bus stop 11 Stop sign 12 Give way 13 Roundabout 14 Priority road 15 Road narrowing 16 Priority over oncoming traffic 17 Give way to oncoming traffic 18 Pedestrian crossing 19 Railway crossing 20 Mandatory direction 21 School area 22 Overtaking 23 Crossing animals 24 Slippery road 25 Chevron 26 Wrong-way driving 27 Roadworks 28 Height limit 29 Weight limit 30 Radar speed sign 31 Selective barriers 32 Priority at the next junction 33 Traffic lights 34 Traffic lights warning 35 Road markings 36 Countdown markers 37 Traffic mirror 38 Cycling route 39 Parking 40 No parking 41 No stopping 42 Disabled parking 43 Reversing 44 U-turn 45 Uncontrolled crossroad 46 Road surface 47 City limit 48 Licence plate 49 Charging station 50 Dangers 51 Cyclist 52 Moped 53 Car 54 Bus 55 Police 56 Ambulance 57 Taxi 58 European emission standard 59 Pothole 60 Path 61 Particulates 62 Air pollution 63 Rush hour 64 Road code 65 Two-way traffic 66 Street gutter 67 Cargo bike 68 Forestry vehicle 69 Construction vehicle 70 Semi-trailer truck 71 Trolleybus 72 Speed pedelec 73 Delivery vehicle 74 Idling 75 Tow truck 76 Four-wheel drive 77 No vehicles 78 Bicycle 79 Motorcycle equipment 80 Rail track 81 Caravan 82 Trailer 83 Tow hitch 84 Fire truck 85 Siren 86 Convoy 87 Emergency vehicle lighting 88 Agricultural machinery 89 Electric bicycle 90 Electric vehicle 91 Pedelec 92 Quadricycle 93 Microcar 94 All-terrain vehicle 95 Van 96 Recreational vehicle 97 Scooter 98 Trikke 99 Personal mobility device 100 Skateboard ...