Three short whistle blasts are sounded to:

Three short whistle blasts are a standard signal used in train operation to request that a car inspector meet the train. This specific signal is utilized when the train is approaching a location where a car inspector's assistance is needed, such as during routine maintenance checks or inspections. It’s crucial for communication between the train crew and ground personnel to ensure the safety and efficiency of operations.

When signaling for a car inspector, clarity in communication is essential, and distinctive whistle patterns like the three short blasts help avoid any confusion that may arise with other signals used in the railway system. Each whistle blast carries its own meaning, and it's vital for all train crew members and inspectors to be well-versed in these signals for effective coordination.