Tokyu 2020 series

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Tokyu 2020 series" – news · newspapers · books · scholar · JSTOR (April 2022) (Learn how and when to remove this message)

Tokyu 2020/6020/3020 series
A Den-en-toshi Line 2020 series set in October 2021
Manufacturer	J-TREC
Designer	Tanseisha
Built at	Niitsu (2020 series only) Yokohama (all)
Family name	Sustina S24 series
Operators	Tōkyū Railways
Specifications
Car body construction	Stainless steel
Car length	20,470 mm (67 ft 2 in) (end cars) 20,000 mm (65 ft 7 in) (int. cars)
Width	2,788 mm (9 ft 2 in)
Height	4,046 mm (13 ft 3 in) (not including pantograph)
Floor height	1,130 mm (3 ft 8 in)
Doors	4 pairs per side
Maximum speed	120 km/h (75 mph) (design)
Traction system	Variable frequency (SiC-MOSFET)
Acceleration	3.3 km/(h⋅s) (2.1 mph/s)
Deceleration	4.0 km/(h⋅s) (2.5 mph/s) (service) 4.5 km/(h⋅s) (2.8 mph/s) (emergency)
Electric system(s)	1,500 V DC (overhead catenary)
Current collector(s)	Pantograph
Bogies	TS-1041 (motored) TS-1042 (trailer)
Track gauge	1,067 mm (3 ft 6 in)
Notes/references
Details in this infobox apply to the 2020 series and its derivatives. Type-specific details can be found in their respective sections.[1][2]

The Tokyu 2020 series (東急2020系, Tōkyū 2020-kei) is an electric multiple unit (EMU) commuter train type built by J-TREC and used by the Japanese private railway operator Tokyu Corporation in the Tokyo area since March 2018.^[3] The 2020 series is used primarily on the Tokyu Den-en-toshi Line while its derivatives, the 3020 series (3020系, 3020-kei) and the 6020 series (6020系, 6020-kei), are used mainly on the Tokyu Meguro Line^[4] and Tokyu Oimachi Line^[5] respectively.

The 2020 series trains were built by Japan Transport Engineering Company (J-TREC) as part of its "Sustina S24 Series" family of 20-metre long four-door stainless steel cars.^[6] The styling of the trains was overseen by Tanseisha, a company involved in designing commercial buildings along the Tokyu route.^[3]

The classification "2020 series" for the trains was chosen to mark the year 2020 in which the Tokyo Olympics were scheduled to be held and in which Tokyu celebrated its 100th anniversary.^[3]

•   2020 series: 10-car sets used on the Tokyu Den-en-toshi Line since March 2018
•   3020 series: 8-car (originally 6-car) sets used on the Tokyu Meguro Line since November 2019
•   6020 series: 5- and 7-car sets used on the Tokyu Oimachi Line since March 2018

Tokyu 2020 series
The first set, 2121, in October 2018
In service	March 2018 – present
Built at	Niitsu Yokohama
Replaced	2000 series (displaced to Oimachi Line) 8500 series 8590 series
Constructed	2017–2022
Entered service	28 March 2018
Number built	300 vehicles (30 sets)
Number in service	300 vehicles (30 sets)
Formation	10 cars per trainset
Fleet numbers	2121–2150
Depots	Nagatsuta
Lines served	DT Tokyu Den-en-toshi Line Z Tokyo Metro Hanzomon Line TS Tobu Skytree Line TI Tobu Isesaki Line TN Tobu Nikko Line

Details of the 2020 series were officially announced on 17 March 2017.^[3] Three ten-car sets (30 vehicles) are scheduled to be delivered during fiscal 2017, entering service in spring 2018,^[1] with further sets introduced over the following years.^[3] The first trainset, 2121, was delivered from the J-TREC factory in Yokohama in late November 2017, and shown off to the media on 30 November 2017.^[7] The second trainset, 2122, was delivered from the J-TREC factory in Niitsu, Niigata, in February 2018.^[8]

The first sets entered service on 28 March 2018.^[9]

Passenger accommodation consists of high-back longitudinal seats.^[3] In addition to passenger information screens placed above the doorways and car ends, LCD screens are also located above the seats.^[3] Security cameras are installed in the cars.^[3]

• 
  2020 series interior view

The trains are formed as follows, with five motored ("M") cars and five non-powered trailer ("T") cars, and car 1 at the Shibuya end.^[1]

Cars 3 and 9 each have two single-arm pantographs, and car 6 has one.^[1]

The manufacturers and delivery dates for the fleet are as shown below.

Tokyu 3020 series
A 3020 series train on the Toei Mita Line approaching Hasune in November 2022
Built at	Yokohama
Constructed	2019
Entered service	22 November 2019
Number built	24 vehicles
Number in service	24 vehicles (3 sets)
Formation	8 (originally 6) cars per trainset
Fleet numbers	3121–3123
Lines served	MG Tokyu Meguro Line SH Tokyu Shin-Yokohama Line N Tokyo Metro Namboku Line SR Saitama Rapid Railway Line I Toei Mita Line Sōtetsu Shin-Yokohama Line Sōtetsu Main Line Sōtetsu Izumino Line

On 26 March 2019, Tokyu Corporation announced the introduction of new 3020 series trains on their Meguro Line.^[4] The first set of eight cars was delivered in April 2019.^[14] A second set of eight cars was transferred from J-TREC in Yokohama to Nagatsuta in May 2019.^[15] Trial runs on the Den-en-toshi Line began in June 2019.^[16]

The first 3020 series set entered revenue service on 22 November 2019.^{[17][better source needed]} Originally operating as 6-car sets, the fleet began operating as 8-car sets in April 2022.^[18]

Service commenced on the Tōkyū Shin-Yokohama Line in March 2023. As of June 2023, the 3020 series lacks equipment needed in order to through run on the Sōtetsu Shin-Yokohama Line and associated through services. Tokyu plans to install the required equipment to enable Sotetsu through service in the near future.^[19] Set 3121 had officially entered service along the Sotetsu network on 26 September 2023, over a half year later of the opening of the Sōtetsu-Tokyu Link Line.

Passenger accommodation consists of high-back seating.^[4] The trains are also fitted with security cameras and air purifiers.^[20]

• 
  Interior view
• 
  Wheelchair space (right)
• 
  Passenger information displays

The trains are operated as eight-car sets. They were originally built as such, but were initially operated as six-car sets, with two cars per set stored until 2022, when platform doors were extended to fit 8-car trains as part of Tokyu Corporation's strategy to cope with high demand on the Meguro Line and for the opening of the Sōtetsu Tōkyū Link Line.^[4][21] All three trainsets are distinguished with an "8-Cars" sticker located on the front window of the first and last cars, and are formed as follows:^[2]

The "M1B" and "M1A" cars are each fitted with two single-arm pantographs.^[2]

The original six-car formation was as follows:^[2]

The "M1B" and "M1A" cars were each fitted with two single-arm pantographs.^[2]

• 
  6-car set on the Toei Mita Line in June 2021

The manufacturers and delivery dates for the fleet are as shown below.

Tokyu 6020 series
Set 6121 in service in December 2018
In service	March 2018 – present
Built at	Yokohama
Constructed	2017–2018, 2025–
Entered service	28 March 2018
Number under construction	85 vehicles (17 sets) on order
Number built	21 vehicles 2 × 7-car 1 × 5-car 2 × int. car
Number in service	19 vehicles (3 sets)
Formation	5/7 cars per trainset
Fleet numbers	6121–6122 (7-car sets) 6151– (5-car sets)
Lines served	OM Tokyu Oimachi Line DT Tokyu Den-en-toshi Line[23]

Details of the 6020 series were officially announced on 12 October 2017.^[5] The first set was delivered from the J-TREC factory in Yokohama in December 2017,^[24] followed by a second in January 2018.^[25] They entered revenue service from 28 March 2018.^[9]

In both sets, car 3 was replaced by a new-build "Q Seat" car built in October 2018. The outgoing cars were subsequently used in 2020 series sets 2126 and 2127.^[11] The Q Seat cars are usually arranged in longitudinal mode, but on specific evening express trains from Ōimachi to Nagatsuta, they are arranged in transverse mode and can be used only with a reservation by paying a small surcharge.^[23]

• 
  Q Seat car

On 28 February 2025, Tokyu announced its plans to procure eighteen 5-car 6020 series sets to replace all 9000 and 9020 series sets on local Ōimachi Line services.^[26] Tokyu states that the new trains offer approximately 40% energy savings over the 9000 series sets and allow for quieter operation.^[27] These sets feature "5 Cars" stickers on the front ends and blue stickers next to the train doors to distinguish them from the 7-car sets.^[28] The first such set, 6151, was delivered to the Nagatsuta depot in March of that year.^[29] The 5-car fleet entered revenue service on 2 July 2025.^[30]

Passenger accommodation consists of high-back longitudinal seating throughout,^[5] except car 3 in 7-car sets, which is a "Q Seat" car that features rotating pairs of seats that can be arranged in longitudinal mode or transverse mode.^[23] Security cameras are installed in the cars.^[5]

• 
  Interior view
• 
  Interior view of a Q Seat car
• 
  Rotating seat

The 7-car sets are formed as follows:^[31]

Cars 3 and 6 are each fitted with two single-arm pantographs.^[31]

The 5-car sets are formed as follows:^[27]

The 7-car sets were originally formed as follows:^[32]

Cars 3 and 6 were each fitted with two single-arm pantographs.^[32]

The manufacturers and delivery dates for the fleet are as shown below.

On 10 April 2022, 3020 series set 3121 received a special livery to commemorate the 100th anniversary of Tokyu Corporation's founding.^[33][34] A 2020 series set is also due to receive the commemorative livery from 17 April.^[34]

On 17 April 2023, 3020 series set 3122 received a colorful rainbow Sustainable Development Goals (SDGs) livery.^[19]

This article incorporates material from the corresponding article in the Japanese Wikipedia.

Wikimedia Commons has media related to Tokyu 2020 series, Tokyu 3020 series and Tokyu 6020 series.

• Official 2020 series news release (in Japanese)
• Official 3020 series news release (in Japanese)
• Official 6020 series news release (in Japanese)