ASTM Committee D04 on Road and Paving Materials was formed in 1903. D04 meets twice a year, usually in June and December, with about 100 members attending three days of technical meetings. The Committee, with a membership of over 750, currently has 27 technical subcommittees that have jurisdiction of over 200 standards, published in the Annual Book of ASTM Standards, Volume 4.03. Information on their subcommittee structure, and portfolio of approved standards and Work Items under development, are available from the List of Subcommittees, Standards and Work Items below. These standards have and continue to play a preeminent role in all aspects of construction and maintenance of highways, and other transportation construction.