Tobu 3000 series
 The Tobu 3000 series (東武3000系 Tōbu 3000-kei) was a commuter electric multiple unit (EMU) train type operated by the Tobu Railway in Japan.The 3000 series was created by modernizing old Tobu EMU cars dating from the 1920s and 1930s by adding new 18 m long steel bodies based on the 2000 series design with three pairs of sliding doors per side and front ends based on the 8000 series design. The fleet was subdivided into 3000 3050 and 3070 series types.