After MU-ing the BN 7042 as a trail locomotive, where should the automatic brake valve handle be positioned?

When the BN 7042 is MU'd (multiple-units coupled) as a trail locomotive, the proper positioning of the automatic brake valve handle should be set to continuous service. This setting allows the automatic air brakes to remain operational and responsive during train movement, which is crucial for controlling speed and ensuring the safety of the locomotive and the entire train.

Continuous service allows for the application of brakes as needed while maintaining a scenario where the locomotive can respond to any emergency or operational demands. In trail locomotives, it's essential to have the brakes in a mode that allows them to remain active to contribute to the overall train dynamics effectively.

Other settings, such as the automatic brake valve handle in service or released, would not support the intended operational efficiency for a trail locomotive. Being in "cut out" would mean the brakes are disabled, which is not safe for train handling. Proper knowledge of these settings enhances the safety and efficiency of operating MU (multiple-unit) trains.