This submodule represents a simulation of what would happen when:
- The sensor in the front carriage of the train passes through the check in detection point on the bridge:
- Train sends message to central with GPS position, train composition id, and timestamp
- The front carriage passes through the first sensor on the bridge
- The bridge sends a message to central with timestamp
- The sensor in the last carriage of the train passes through the checkout detection point on the bridge
- Train sends message to central with GPS position, train composition id, and timestamp
- The last carriage passes through the last sensor on the bridge
- The bridge sends a message to central with timestamp
All messages are triangulated at central and the database gaps are automatically filled out. The train server is also updated.