I've asked TomTom support this question but no one has responded: The manual suggests that the 510 and 910 will display a speed in red if it exceeds a limit entered in the database, and that it will flash red if the speeding is excessive. I'd sooner have that warning than one telling me a speed camera is near, but I have yet to see the speeding display, either on Michigan two-lane roads or on its freeways. Has anyone observed this feature on a TomTom in the US? Is the data available in UK or European databases?