What document must Engineers have on them while performing their duties?

Engineers must carry their Engineer Certification Card while performing their duties to ensure they are recognized as qualified individuals to operate locomotives or perform other required tasks. This certification serves as proof that they have completed the necessary training and assessments to safely conduct operations on the railroad.

It's essential for engineers to have this card because it not only demonstrates their qualifications but also complies with regulatory requirements set forth by various governing bodies in the railway industry. In the event of an inspection or operational audit, having this card readily available confirms that the engineer is authorized to be in charge of the locomotive and ensures adherence to safe operating practices.

Other documents, while important for various functions of railway operations, do not serve the same purpose as the Engineer Certification Card in terms of validating the engineer's authority and qualifications.