Large potential benefits of infrastructure may elude identification and measurement by conventional cost-benefit analysis. Canning and Bennathan estimate social rates of return on general capital, by examining the effect on aggregate output and comparing that effect with the costs of construction

This Round Table examines the impact of infrastructure investment on economic development for several cases: the A7 Lyons-Bollene section in France, the situation in general in Belgium, a motorway in the UK, and a railway line investment in Yugoslavia.