Railroads haven't historically been big players in the refrigerated shipping market, but that might be slowly changing. "There are a range of new intermodal refrigerated services," said Steve Weiby, vice president of intermodal at C.H. Robinson. "Everyone is trying to work on different solutions to manage refrigerated capacity and take advantage of some of the technology changes." The "cold train" service launched this year by Rail Logistics and Burlington Northern Santa Fe has seen weekly traffic surge 40%.