The train hit the buffer stop at Shin-Sugita station after travelling wrong way. (Representational)

Fourteen passengers were injured after an driverless five-car train in suburban Tokyo went in the wrong direction and crashed into a buffer stop, Japanese police said Sunday.

Local media reported that some injuries -- the first resulting from an accident involving an automated train in 30 years -- appeared to be serious but non-life-threatening.

The train hit the buffer stop at Shin-Sugita station after travelling the wrong way for about 20 metres (65 feet), Akihiko Mikami, president of the train operator, said in a midnight press conference.

The station is a terminal of the self-driving Kanazawa Seaside Line in the port city of Yokohama.

Mikami added that the operator has shut down the line and it was uncertain when services would be resumed.

Compared to self-driving cars that have recently taken the road in several countries on a test basis, automated trains have a relatively long history in Japan.

Among accidents that have made headlines are a collision involving an autonomous Uber vehicle that killed a pedestrian and a fatal crash that involved electric car maker Tesla's "Autopilot" feature, both of which occurred last year in the United States.