The Transportation Research Board (TRB) 99th Annual Meeting was held January 12-16, 2020, at the Walter E. Washington Convention Center, in Washington, D.C. 

At the last annual meeting, the Impairment in Transportation Committee sponsored a workshop on cannabis legalization and several presentations and posters on alcohol and drugs, in addition to holding its general committee meeting. View the committee's presentations and other information from the 99th annual meeting here.