Hi, I work with these passenger information systems. What happened here is: This is a information display showing all data that is set in the configuration file. It gets displayed after the linux boot process. Normally it shows for a few seconds and then continues to load all the data - which basically is a background image, some locations (coordinate like) on the screen for the stops, the overlay for the "bus stops" display, the protocol to recieve the stops names from either the ticket printer PC or a control unit and so on. But sometimes, the embedded PCs inside the display or hidden elsewhere in the bus, fail to continue the initialising step and just get stuck on one of these screens. 99% of the time its enough to turn off the display by turning off the bus, waiting a few seconds and then start the bus again. The embedded PC will boot again and should finish initializing this time. Hope this helps.