despite strong increases in traffic flow. The welfare benefits in the short run already cover 40% of the widenings' investment …

This paper estimates the marginal accident externality of driving in Central London by exploiting variation in traffic …. These estimates imply that the marginal external benefit of road safety from an additional kilometre driven is approximately … severity of traffic collisions for other road users by slowing others down and increasing awareness. …

, and end users, in the context of road transportation. Using a game-theoretical analysis of suppliers' pricing strategies …, we assess the social welfare effects of traffic information under various road markets with different ownership regimes … exactly the same, as traffic information is not strictly complementary to road use. …

) as well as the 'public goods' these institutions produce: social protection, safety, environmental quality, education …

traffic information on traveller behaviour. Specifically, we distinguish between the marginal impact of expected travel times …-phone with traffic information as a reward in our experiment respond to the deviation of actual travel times from the expectation …, which they did not do before. This we interpret as evidence that traffic information indeed affects behaviour. We also find …