High crude oil prices, uncertainties about the consequences of climate change and the eventual decline of conventional oil production raise the prospects of alternative fuels, such as biofuels. This paper describes a simple probabilistic model of the costs of energy crops, drawing on the user's...

Uncertainty surrounding the plausibility of predicted increases in traffic on the UK's roads highlights the need for an alternative to unconditional forecasting in transport planning. A scenario-based method, capable of dealing with this kind of uncertainty, is used to explore three alternative...

There is increasing concern about aircraft noise as a result of the rising demand for air transport. According to the US National Science and Technology Council, the environmental impacts of aircraft, including serious noise problems, are likely to limit air transportation growth in the 21st...