What is the purpose of Rails?

• A. Guide the wheels
• B. Distribute weight & maintain gauge
• C. Drainage and support for rails/sleepers
• D. Protect workers

Answer: (A)

Rails provide the guiding surface for train wheels. The wheels roll along the rail and are steered along a fixed path by that continuous rail surface, keeping the train on track and preventing derailment. While the overall track structure (ballast, sleepers, fastenings) helps distribute weight and maintain gauge, those are secondary system functions, not the rail’s primary role. Drainage and worker protection are important aspects of rail operations, but they aren’t the rail’s main purpose. So guiding the wheels is the best answer.