Abstract
This Report discusses the selection of roadmaking materials and the design of road pavements in tropical and sub-tropical countries for roads in rural areas ranging from rudimentary tracks to bituminous-surfaced main highways. The properties required in road sub-bases, bases and surfacings are reviewed with emphasis on the use of materials available locally in these regions. Recommendations are made for the selection of pavement thicknesses in terms of traffic loading and the strength of the soil subgrade. The report concludes by considering how stage construction should be planned and the organisation and financing of road maintenance. (Author/publisher)