Event triggering uses the RFID to activate an event that normally requires an immediate action or decision, often onboard the train. Examples of existing applications include Tetra radio channel switching and neutral-zone power switching. In all these applications, the ability to provide reliable identification and condition based decision making outputs directly from the reader, is a key factor for the application.

In this application the HD-reader is mounted on the train to provide an onboard system with the precise location of the train along the line. Typical applications include Automatic Train Control (ATC) systems and Condition Based Train Control (CBTC) systems, where the ID-tags identity is interpreted by the onboard system as an actual position. This information allows ATC and CBTC equipment to control the movement of the train in a safe and reliable way. Other applications include onboard anti-collision systems, which use the positioning information to confirm the train’s location and provide an additional driver aid to help prevent collisions caused by signalling, train and human errors.