PIAR (World Road Association) exists to improve international co-operation and to foster progress in the field of roads and road transport by:
- being a leading international forum for analysis and discussion of the full spectrum of transport issues relating to roads and road transport,
- identifying, developing and disseminating best practice and giving better access to international information,
- full consideration in its activities of the needs of developing countries and countries in transition,
- developing and promoting efficient tools for decision making on matters related to roads and road transport.