When power is restored to the third rail after an outage, what is required of passenger train operators?

When power is restored to the third rail after an outage, it is essential for passenger train operators to operate in series speed for the first two minutes. This procedure is necessary because it allows for a gradual reintroduction of power to the train systems as well as ensuring that all equipment is functioning properly in a controlled manner. Operating at a reduced speed initially helps to mitigate the risk of any sudden electrical surges that might occur when power is first restored. This cautious approach ensures the safety of passengers and crew, as well as protects the train's electrical and mechanical systems from potential damage that could occur from sudden operational demands.

In situations following a power outage, other actions might not address the immediate need for a safe and controlled return to service. For instance, driving at full speed immediately could lead to safety risks due to potential equipment failures or electrical instability. Conducting a full equipment check, while prudent, would not provide the immediate operational response needed after power restoration. Similarly, while proceeding at reduced speed for safety is a good practice in many scenarios, the specific requirement to operate in series speed for the first two minutes emphasizes a systematic approach to re-establishing power safety.