Road humps 'increase exhaust fumes'
Road humps are a serious environmental threat, causing inceases in car exhaust pollution of at least 50 per cent and worsening petrol consumption, according to a British government-funded study.The
Road humps are a serious environmental threat, causing inceases in car exhaust pollution of at least 50 per cent and worsening petrol consumption, according to a British government-funded study.The