page_title: Japanese railway signals
section_title: Cab signalling
hierarchical_section_title: Japanese railway signals / Cab signalling
caption_attribution_description: English: Speed meter in 5010, Tōkyū 5000 series (II) (Taken at Tokyu Den-en-toshi line Minami-machida Station)日本語: 東急5000系車両5010号の運転台（東急田園都市線　南町田駅）
context_page_description: Japanese railway signals, according to the ministerial decree defining technical standards of railways, are defined as indicating operational conditions for railway staff driving trains.
  Japanese signalling was initially based on British railway signalling, and Japanese railway signalling continues to be based on the UK route signalling system. However, as signalling has advanced to meet the requirements of the system, the Japanese signalling system is a mixture of route signalling and American speed signalling.
context_section_description: A cab signal (車内信号, shanai shingō) is a device displaying a signal in a train cab. Cab signalling can only work on tracks with Automatic Train Control or similar. The Yamanote Line, Keihin-Tōhoku Line, Keio Corporation, Shinkansen and some rapid transit lines use cab signalling. For example, on the Yamanote line there are arrow lamps that point to the corresponding speed on the speedometer; the lamp corresponding to the current maximum speed is lit. On the Shinkansen, cab signals were introduced because it is difficult to see track-side signals at high speed.
caption: Cab signal
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