B61L 21/065
Vehicle-on-line indication; Monitoring locking and release of the route {for signals, including signals actuated by the vehicle}
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Edits on 16 Mar, 2022
Golden AI
Edits on 9 Mar, 2022
Golden AI
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Description (+128 characters)
B61L 21/065
Vehicle-on-line indication; Monitoring locking and release of the route {for signals, including signals actuated by the vehicle}
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