Doctor Yellow
JR Central's class 923 Doctor Yellow set T4
Doctor Yellow are a group of Japanese trains which are used to test the condition of Shinkansen high-speed train lines. The trains check the tracks on the ground and also the wires which run above the trains. Their name comes from their unusual equipment onboard "Doctor", and the color that they are painted in "Yellow". The color scheme was made from reversing the color scheme (blue with a yellow stripe) used on test trains on non-high speed lines into yellow with a blue stripe.
The trains can go as fast as normal shinkansen trains, up to 270 km/h on the Tōkaidō Shinkansen .
Gallery on the doctor yellow
Lines in service
Main lines (200+ km/h)
Tokaido
Sanyō
Tohoku
Joetsu
Hokuriku
Kyushu
Hokkaido
Mini-shinkansen (130 km/h)
Future lines
Chuo (2027)
Chuo (Nagoya - Shin-Osaka) (2037)
Kyushu Nagasaki West Branch (2022)
Hokkaido Northwards Extension (2030)
Hokuriku Tsuruga Extension (2023)
Hokuriku Osaka Extension (date unknown)
Cancelled lines Service names
In service
Fast (Nozomi ; Hayabusa ; Mizuho ; Kagayaki )
Limited-Stop (Hikari ; Hikari Rail Star ; Sakura ; Hakutaka ; Toki/Max Toki ; Hayate )
Stopping (Kodama ; Yamabiko ; Nasuno ; Tsubame ; Tanigawa/Max Tanigawa ; Asama ; Tsurugi )
Diverging to slower lines (Tsubasa ; Komachi )
Excursion Discontinued
Trainsets
In service On order Retired
0 series
100 series
200 series
300 series
400 series
E1 series
Export trainsets
THSR 700T
CRH2A & CRH2B
N700-I (planned)
Non-revenue earning trainsets
Class 1000
Class 951
Class 961
Class 962
Doctor Yellow
WIN350
STAR21
300X
Fastech 360
Gauge Change Train
MLX-01
ALFA-X
Operators
Current operators
JR Hokkaido
JR East
JR Central
JR West
JR Kyushu
Former operators
JNR (1964–87)
People
Japan transit : Tokyo
Osaka
Nagoya
Fukuoka
Hakone Fuji Izu
Hokkaido
Aomori
Sendai
Akita
Niigata
Toyama
Nagano
Okayama
Hiroshima
Shikoku
Metro systems
Shinkansen
trams (list)
aerial lifts (list)
Current / active
Shinkansen
AC EMUs
E2 series
E3 series
E4 series
E5 series
E6 series
E7 series
Conventional lines(Narrow- gauge )
DC EMUs
Commuter Limited express
185
215
253
255
E257
E259
E261
E353
AC/DC EMUs
AC EMUs
BEMUs
DMUs
KiHa 40
KiHa 100/110
KiHa E120
KiHa E130
KiHa 141
GV-E400
Hybrid MUs
E001
KiHa E200
HB-E210
HB-E300
Non-revenue
Future
Shinkansen
Conventional lines
DC EMU E131
Fuel cell EMU FV-E991
Retired / withdrawn
Shinkansen
AC EMUs
200 series
400 series
E1 series
Conventional lines
DC EMUs
KuMoHa 12
101
103
105
107
113
123
201
203
207
301
157
165
167
169
183
189
251
E351
AC/DC EMUs
401
403
415
417
451
453
455
457
483
489
583
AC EMUs DMUs
KiHa 20
KiHa 30
KiHa 35
KiHa 37
KiHa 38
KiHa 45
KiHa 52
KiHa 58
KiHa 59
Non-revenue
AC EMUs
925
STAR21
KuMoYa 740
KuMoYa 743
DC EMUs AC/DC EMUs
KuMoYa 441
443
KuYa 497
E991
DMU Hybrid MU DC BEMU
Experimental
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