What is Railshare Rail traffic figures are provided each Thursday by the Association of American Railroads. Atlantic Systems Inc. distributes the data covering the week ending the preceding Saturday in our Railshare data base. Railroads originate and also move traffic jointly with other originating carriers. The carrier totals shown in Railshare aggregate all traffic handled by individual carriers. Market shares are calculated as total handlings by carrier divided by total U.S. originated rail traffic.
Railshare graphs show four major breakdowns of rail traffic.