Section 246.121 - Knowledge testing(a) After FRA has approved a railroad's signal employee certification program, the railroad shall determine, prior to issuing any person a signal employee certificate and in accordance with the requirements of this section, that the person has demonstrated sufficient knowledge of the railroad's signal standards, test procedures, and instructions for the installation, operation, testing, maintenance, troubleshooting, and repair of the railroad's signal system equipment and signal-related technology.(b) To make the knowledge determination required by paragraph (a) of this section, a railroad shall have procedures for testing a person being evaluated for certification as a signal employee that: (1) Are designed to examine a person's knowledge of:(i) All applicable Federal railroad safety laws, regulations, and orders governing signal systems and signal-related technology;(ii) All applicable railroad safety and operating rules; and(iii) All applicable railroad standards, procedures, and instructions for the installation, operation, testing, maintenance, troubleshooting, and repair of the railroad's signal systems and signal-related technology, including:(A) The railroad's rules and standards for disabling and removing signal systems from service; and(B) The railroad's rules and standards for placing signal systems back in service;(2) Are objective in nature;(3) Include a practical demonstration component;(4) Are in written or electronic form;(5) Are sufficient to accurately measure the person's knowledge of the subjects listed in paragraph (b)(1) of this section; and(6) Allow for testing conducted with reference to books and other written materials, as addressed in the railroad's certification program.(c) The railroad shall provide the certification candidate with an opportunity to consult with a mentor, signal instructor or qualified instructor to explain one or more test questions.(d) If a person fails the test, no railroad shall permit or require that person to work as a certified signal employee prior to that person's achieving a passing score during a reexamination of the test.(e) Each railroad shall adopt and comply with a program meeting the requirements of this section. When any person (including but not limited to a railroad; any manager, supervisor, official, or agent of a railroad; any owner, manufacturer, lessor, or lessee of railroad equipment, track, or facilities; any employee of such owner, manufacturer, lessor, lessee, or independent contractor or subcontractor) violates any requirement of a program which complies with the requirements of this section, that person shall be considered to have violated the requirements of this section.