Various types of vehicles may be known as Transporters:
on railways:
Transporter wagon, for carrying railway wagons of one gauge on another gauge
on roads:
Animal transporter, for livestock and other animals
Self Propelled Modular Transporter, for general heavy road haulage
Tank transporter, for military tanks over long distances
on other places:
Crawler-transporter, for the US Space Shuttle
Transporter erector launcher, for military missiles
Shipyard transporter, for sections of ship hulls and other heavy objects