True or False: It is permitted to walk or sit on rails and interlocking apparatus as long as caution is exercised.

Walking or sitting on rails and interlocking apparatus is prohibited, regardless of the level of caution exercised. This rule is in place to ensure the safety of individuals and to prevent accidents that could occur from falling or being struck by a moving train. The railway environment poses inherent risks, and the presence of machinery, electrical systems, and moving trains creates a dangerous situation for anyone on or near the tracks.

Maintaining a safe distance from the rails and interlocking apparatus is critical for the safety of both railway personnel and the public. The proper procedures require individuals to stay off the tracks and machinery to avoid accidents and injuries. Although some contexts may have exceptions for inspections or emergencies, the general rule is clear in prioritizing safety above all else, which is why the correct answer is that it is false to say it is permitted under any circumstances.