| Trailer 
                on flat car service has existed since the 1940s as a part of North 
                American railroading. 
 Although intermodal trailer traffic would explode in the late 
                1980s and early 1990s with railroads perfecting hotshot intermodal 
                freight operations. The primary commodity of early intermodal 
                trailers was mail and dry non-perishable goods.
 
 Advancements in refrigeration units in the late 1990s would allow 
                refrigerated trailers with food, pharmaceuticals and other perishable 
                goods to join the list of commodities traveling via intermodal 
                freight service.
 
 The Atlas 53 Modern Reefer Trailer is a replica of the extremely 
                popular Utility 3000R refrigerated trailer prototype. The 3000R 
                has been the most widely produced 53 refrigerated trailer 
                since its introduction in 1999.
 
 3000R trailers can be seen on almost all intermodal trailer trains 
                from 1999 onwards, making it a critical model for modern intermodal 
                modeling!
 
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