Last month, 1,401,081 trailers and containers were transported via intermodal rail -- the highest monthly total ever. Intermodal numbers are up for the year as well, with volumes 3.4% higher than this point in 2016 and 0.3% higher than 2015, which was the highest-volume year on record. Why all this record-setting growth in intermodal? Let’s find out. If you’re a long-time supply chain professional, you may remember that “rail” used to be a dirty word.