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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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XIIth World Road Congress - Rome 1964 - Technical Committees Reports

Report by Committee on traffic and safety

Report by Committee on slipperiness

Report by Committee on Road Tunnels

Report by mixed PIARC-Cembureau Committee - Carriageways in prestressed concrete

Report by Committee on testing of road materials

Report by Committee on pavement design

Report by Committee on economical roads