Who must NOT be stationed at the forward end of the train?

The role of the road car inspector primarily involves inspecting the condition of railcars, ensuring that they meet safety regulations and are in good working order. This function is typically performed in specific locations such as yards or stations rather than at the forward end of the train during its operation.

On the other hand, the conductor, containment officer, and signal technician have crucial responsibilities that do necessitate their presence at the forward end of the train. The conductor manages the overall operation, ensuring safety and compliance with regulations. The containment officer is responsible for monitoring hazardous materials, which also aids in ensuring safety. Meanwhile, the signal technician often needs to be in positions that allow for optimal communication and coordination with train movements and signaling systems, which can also place them at the forward section when necessary.

Thus, the road car inspector's specific focus on inspections rather than direct oversight or active management of the train's movement makes them the individual not required to be stationed at the forward end.