When should a crew request a TrAM check from the dispatcher?

The situation in which a crew should request a TrAM check from the dispatcher is when they find that the marshalling information is incomplete. This is important because accurate marshalling information is essential for safe and efficient train operations. A TrAM (Train Activity Management) check helps ensure that the train is appropriately positioned on the network, taking into account the number, type, and arrangement of rail cars. Incomplete marshalling information can lead to significant safety risks, such as potential miscommunication about the train’s makeup or destination, which could cause issues along the route or at stations.

While there are scenarios where a crew might suspect a track defect, receive a warning, or check data for every trip, the specific context for asking for a TrAM check relates primarily to the need for accurate marshalling details. Proper marshalling enables the dispatcher to have a complete understanding of the train’s configuration and ensures that it adheres to operational protocols.