During de-energized Third Rail procedures, protection is provided by which class of employee?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (A)

In this scenario, the protective measure for working on a de-energized third rail is put in place and maintained by the person who is trained and authorized to create a protected condition. This role, Class A, is the one responsible for verifying the third rail is de-energized and isolated, applying any required lockout/tagout devices, and enforcing the protection boundaries so workers can perform the job safely. They coordinate with the control center and the crew, certify that the area remains safe, and control when protection is lifted. Because only this level of authorization and training is designed to establish and maintain the protected condition needed for third-rail work, Class A is the correct designation. Other classes represent roles with different levels of responsibility and do not carry the same authority to provide the protective conditions required here.