Code of Federal Regulations Title 49. Transportation § 49.218.61 Authority to deactivate safety devices

(a) For the purpose of this chapter, it is lawful to temporarily render a safety device incapable of proper or effective action or to materially impair its function if this action is taken as provided for in paragraph (b) or (c) of this section.

(b) If a locomotive is equipped with a device to assure that the operator is alert or not physically incapacitated, that device may be deactivated when:

(c) If a locomotive is equipped with a device to record data concerning the operation of that locomotive and/or of the train it is powering, that device may be deactivated only in accordance with the provisions of § 229.135.