Ala. Code § 37-2-86.1

Every railroad conductor and engineer in this state shall carry on his person while on duty in train service a conductor/engineer’s qualification permit. Every company, association, person or other entity which employs or permits railroad conductors and engineers to engage in train service shall issue to such person a qualification permit. Such permit shall include the conductor or engineer’s name, address, physical description, date of birth and a certification that such person is qualified as a conductor or engineer. Notwithstanding any provision of the law to the contrary, whenever a conductor or engineer of a train is requested to show proof of his identity under the provisions of this title, in connection with operations of such train, to any law enforcement officer, such conductor or engineer shall not be required to display his Alabama motor vehicle driver’s license but shall display his conductor/engineer’s qualification permit instead.