As
reported in yesterday's news, London's
congestion charge is being modified again to improve the capital's green
credentials. From October, vehicles emitting the highest amounts of CO2 will
have to pay £25 a day which gets a big thumbs-up, while the most efficient cars will get into central London free of charge.
Some commentators have pointed out that this effectively changes the purpose of the charge from reducing congestion to reducing pollution, and that's no bad thing. According to the World Resources Institute, road transport spews out around 10 per cent of global emissions (pdf), so providing incentives to move to more efficient models is going to do a lot to cut those exhaust fumes.