> It's astounding that these politicians and bureaucrats who ostensibly have the right idea almost exclusively come up with these complex schemes full of mis-in

> It's astounding that these politicians and bureaucrats who ostensibly have the right idea almost exclusively come up with these complex schemes full of mis-incentives, instead of using simple, correct solutions, like raising gasoline taxes. It's because the issue they're directly trying to tackle is congestion, not pollution (which is only being tackled as a secondary issue). Also, in Britain there are already high petrol taxes, they make up about half the price of fuel. In general it's a good thing, and it does discourage a completely car dependent society - people to live closer to the centre, closer to work, use alternatives like walking, cycling, public transport etc - but it's not a particularly direct way to tackle air pollution, or at least it doesn't tackle the particular spikes in air pollution you get in the cities. In order to tackle air pollution in London using only fuel tax, you'd have to make driving in the countryside ruinously expensive. So you get layered policy - medium fuel tax nationwide, congestion charge for the centre (where it is the biggest issue), and an air pollution charge, or limit, covering the whole city. I do agree that often politicians are not that great at designing these things (the proposed air pollution charge in London is rather strangely designed for instance), and the complexity is partly incompetence, but it's also partly because the problem is complicated.