Some key points are:
  • the CO2 emissions relate purely to fuel use
  • the average passengers per bus is 9.2 (from 5.2 billion
vehicle km and 48 billion passenger km)
  • the average CO2 emission for the buses is 822 g / km
  • the total UK vehicle km by buses is 5.2 billion [giving a total
CO2 emission of 4.3 million tonnes, i.e. 0.07 tonnes per person]