DT1
DT1 or DT 1 stands for the following vehicle series:
- HHA type DT1 , a double multiple unit of the Hamburg subway
- VAG class DT1 , a double multiple unit of the Nuremberg U-Bahn
- RŽD series ДТ1 (DT1), a diesel railcar of the Rossijskije zhelesnyje dorogi
- BBÖ DT 1 , a steam railcar of the Austrian Federal Railways