The National Congress on School Transportation (NCST) was formed in 1939 while regular meetings were held over the years, the decision was made to hold the Congress every five years beginning in 1980. The Congress did not meet in 2020. All Congresses have been comprised of official representatives of state departments of education, public safety, motor vehicles, and police or other state agencies having state-wide responsibilities for the administration of student transportation. Each Congress has resulted in one or more publications containing the specifications and procedures recommendations for school buses and their operations of that particular Congress.