In the Read mode of the Brake Pipe, what does the TU1 do?

In the Read mode of the Brake Pipe, the key role of the TU1 is to read the information at the brake pipe interface and subsequently send a signal for duplication. This process is crucial for ensuring accurate synchronization and communication within the braking system. By reading the brake pipe interface, the TU1 gathers essential data about the current status and condition of the brake pressure, which is vital for maintaining efficient and safe braking operations.

The ability to send a signal for duplication means that any changes or measurements from the brake pipe can be reliably replicated elsewhere in the system, which is essential for monitoring and responding to braking conditions effectively. This function aids in preventing discrepancies that could lead to faults or malfunctions in the braking system, thus enhancing overall safety and reliability.

Other options would imply functions that are not associated with the TU1's role in the Read mode, as they suggest actions like generating pressure or releasing brake pressure, which do not align with the primary function of reading and duplicating data.