A yellow background with red writing advisory speed sign applies to which type of trains?

A yellow background with red writing advisory speed sign specifically applies to freight trains that are up to 1150 meters in length. This type of signage indicates the maximum speed that these trains should not exceed under certain conditions, helping to ensure the safety of operations and manage the flow of rail traffic effectively.

Freight trains that are up to this specified length have unique operational characteristics, such as braking distances and stability, which must be carefully considered to maintain safety on the rail network. The advisory speed sign helps operators to adhere to these important safety measures and is crucial for preventing accidents or incidents related to excessive speed.

Given that other categories of trains, such as passenger trains, freight trains exceeding 1150 meters, and high-speed rail services, have different operational guidelines and safety indicators, they do not utilize this specific advisory speed sign.