The second set relate to the way road maintenance costs are specified ( assumption V), the construction cost function (assumption VI), the ... Assumption I is that the road network has a fixed length and there is a constant flow of traffic per km.
|Title||:||Optimal User Charges and Cost Recovery for Roads in Developing Countries|
|Author||:||Ian Graeme Heggie, Vincy Fon|
|Publisher||:||World Bank Publications - 1991|