Road vehicles are a major source of many pollutants in urban areas. * Before using your car ask yourself - do I really need to make this journey? Do I really need to use the car, or could I walk or cycle? * If you must drive, switch off the engine if you expect to be stationary for more than a couple of minutes, and * drive smoothly - it will save you fuel and money and you will emit less pollution. * Avoid overfilling the petrol tank and spilling petrol - this evaporates and releases hydrocarbons that are toxic and form ozone. * Use only fuel efficient cars. Avoid SUVs. * Buy water-based or low-solvent paints, glues, varnishes, and wood preservatives wherever you can. * Avoid burning solid fuels if you can.