External costs of road use

I came across this in the Guardian's Comments is Free

The annual external costs of road use in the UK have been estimated as follows...

• Air pollution £19.7 bn
• Congestion £17.5 bn
  
• Accidents £9.4 bn
  
• Noise £2.6 bn
  
• Road damage £1.5 bn
  
• Climate change 0.1 bn
  
• (Road building not included)
• Total £50.8 bn.

This contrasts with the revenues obtained by the exchequer from motorists via fuel taxes and duty (Fuel tax: £12.5 bn, Excise duty: £3.6 bn; Total: £16.1 bn)

Thus motorists are being subsidised by an amount three times larger than the taxes and duty they pay.

http://www.basden.demon.co.uk/G/facts/road.costs.html