In this By the Numbers segment, AASHTO Transportation TV examines the 2018 Transportation Research Board Annual Meeting. Held in Washington DC each year—the 97th gathering will attract an estimated 13,000 plus participants from 70 countries including the US. Over a five day period there will be 800 sessions—everything from guest lectures, workshops, panel and poster presentations and a giant jobs fair. In this segment TRB Executive Director Neil Pedersen reveals the top three subjects selected for this year’s sessions. Can you guess what those hot topics are? Find out the answer and learn more about the important work being done at this year’s conference and by TRB, which is part of the National Academies of Sciences, Engineering, and Medicine.