The term 'BIG TRANSPORTATION NAME' can be solved by the three-letter word 'VIA'. VIA Rail is a Canadian passenger train service that operates across Canada. It is the country's national rail passenger service, and it is owned by the Government of Canada. VIA Rail provides intercity and regional services in eight Canadian provinces, and it is the only passenger rail service in the country. VIA Rail has been providing transportation services since 1977, and it is one of the largest transportation companies in Canada.