Regulation on air pollutants in Europe and North America is progressively tightening as governments seek to minimise adverse effects on air quality, climate, and human health, particularly in our urban centres. Our transport solutions are recognised as being part of a greener future for our cities and towns, so we must maintain our focus on reducing air emissions from our vehicles.
Our transport solutions put us at the heart of a greener, cleaner future for our communities. However diesel engines emit larger volumes of oxides of nitrogen (NOx) than petrol engines and most importantly, far larger emissions of particulate matter (PM), so we have a challenge to reduce air emissions within our fleets.
We can control these emissions through the types of fuel and engines we use, by managing the age of our fleet and by ensuring high standards of fleet maintenance. We aim to reduce the emissions from our fleet to as low as practically possible and to specify all our new buses and coaches with the latest emissions-reducing technology. Our strategy also involves ensuring that our most modern vehicles are utilised the most.
Our bus fleet in the UK operates using sulphur-free diesel fuel, apart from those using alternative energy sources such as bio-methane, electricity and hydrogen. Our bus mileage in the UK from alternative fuels has almost quadrupled since last year. In North America, we operate vehicles using a range of fuel sources including bio-diesel, electricity, CNG, LPG and LNG.