| Yokohama Municipal Subway 4000 series | |
|---|---|
 A 4000 series train at Nakamachidai Station | |
| In service | 2022–present |
| Manufacturer | Kawasaki Heavy Industries |
| Built at | Kōbe, Hyōgo |
| Replaced | 3000A series |
| Constructed | 2021– |
| Entered service | 2 May 2022 |
| Number under construction | 42 carriages (7 sets) |
| Number built | 6 carriages (1 set) |
| Number in service | 6 carriages (1 set) (As of May 2022[update]) |
| Formation | 6-car sets Tc1–M2–M3–M4–M5–Tc6 |
| Capacity | 766 |
| Operators |  Yokohama City Transportation Bureau |
| Depots | Kaminagaya |
| Lines served |  Yokohama Municipal Subway Blue Line |
| Specifications | |
| Car body construction | Stainless steel |
| Train length | 109.08 m (357 ft 10 in) |
| Car length |
|
| Width | 2.76 m (9 ft 1 in) |
| Height | 3,575 mm (11 ft 8.7 in) |
| Doors | 3 pairs per side |
| Wheel diameter | 860 mm (34 in) |
| Wheelbase | 2,100 mm (6 ft 11 in) |
| Maximum speed |
|
| Traction system | VVVF |
| Traction motors | 16 × 140 kW (188 hp) 3-phase AC induction motor[1] |
| Power output | 2.24 MW (3,004 hp)[1] |
| Acceleration | 0.89 m/s2 (2.0 mph/s) |
| Deceleration |
|
| Electric system(s) | 750 V DC third rail |
| Current collector(s) | Contact shoe |
| UIC classification | 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′ |
| Bogies | SS162MB (powered), SS162TB (trailer) |
| Safety system(s) | ATC/ATO |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The Yokohama Municipal Subway 4000 series (横浜市交通局4000形) is a metro electric multiple unit (EMU) train type operated by the Yokohama City Transportation Bureau on the Yokohama Municipal Subway Blue Line in Japan since 2022.