Class 922 Doctor Yellow

Class 922 Doctor Yellow

Doctor Yellow (ドクターイエロー) is the nickname for the high-speed test trains that are used on the Japanese Shinkansen (Bullet Train) dedicated express passenger train routes.

922-0 (Set T1): 4-car set converted in 1964 from the prototype set (class 1000 Set B) built in 1961, and withdrawn in 1976.
922-10 (Set T2): 7-car set owned by JR Central. Built-in 1974 and withdrawn in 2001.
922-20 (Set T3): 7-car set owned by JR West. Built-in 1979 and withdrawn in 2005.

Top speed: 210 kph

Next may be one of them:
Class 1000 (1000形): was the classification given to the two prototype Japanese Shinkansen trains built for high-speed testing ahead of the opening of the Tōkaidō Shinkansen in 1964. Set B recorded a world speed record of 256 km/h (159 mph) at that time.

Class 941: from class 1000 (set A).

Class 925: (200 series type)
925/0 (Set S1): 7-car set owned by JR East. Delivered in 1979 and withdrawn in 2001.
925/10 (Set S2): 7-car set owned by JR East. Converted from the former Class 962 test train in 1982 and withdrawn in 2002.

Class 200:
The 200 series (200系) was a Shinkansen high-speed train type introduced by Japanese National Railways (JNR) for the Tohoku Shinkansen and Joetsu Shinkansen high-speed rail lines in Japan and operated by East Japan Railway Company (JR East) until 2013. The early version using the head looks the same as series 0.