Home/Media/Infographics/FreightWaves Infographics/Daily Infographic: Why are Freight Railroads Separated Into Classes? FreightWaves InfographicsInfographics Daily Infographic: Why are Freight Railroads Separated Into Classes? Brandon Cafferky · Wednesday, May 26, 2021 Facebook Twitter/X LinkedIn To view more FreightWaves infographics, click here.