49 CFR 212.233: Apprentice grade crossing and trespasser inspector.

(a) An apprentice grade crossing and trespasser inspector shall be enrolled in a program of training prescribed by the Associate Administrator for Railroad Safety leading to qualification as a grade crossing and trespasser inspector. The apprentice inspector may not participate in investigative and surveillance activities, except as an assistant to a qualified State or FRA inspector while accompanying that qualified inspector.

(b) Prior to being enrolled in the program the apprentice inspector shall demonstrate:

(1) Working basic knowledge of electricity;

(2) The ability to use electrical test equipment in direct current and alternating current circuits; and

(3) A basic knowledge of highway-rail grade crossing inspection and maintenance methods and procedures.