49 CFR 229.77 - Current collectors.

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§ 229.77 Current collectors.
(a) Pantographs shall be so arranged that they can be operated from the engineer's normal position in the cab. Pantographs that automatically rise when released shall have an automatic locking device to secure them in the down position.
(b) Each pantograph operating on an overhead trolley wire shall have a device for locking and grounding it in the lowest position, that can be applied and released only from a position where the operator has a clear view of the pantograph and roof without mounting the roof.

Title 49 published on 2014-10-01

no entries appear in the Federal Register after this date.