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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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XIth World Road Congress - Rio de Janeiro 1959 - Reports by Technical Committees

Report by Slipperiness Committee

Report by Committee on tests for road making materials

Report by Committee on Airfield Runways

Report by Committee on Low Cost Roads

Report by Committee for the study of road characteristics with relation to safety

Report by Committee on Roads Tunnels

Report by Dictionary Committee