The platform train indicator at Heathrow Terminal 4 tube station. Unusually the second line scrolls messages in other languages, when I took this photograph it was displaying the end of one message ("Londra", possibly Spanish) and the start of another ("Tutti i treni fanno farmeta ai Hea[throw]...", which I think is Italian). 
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Photo by <a href="mailto:cmckenna@sucs.org?subject=rail-photo at railfaneurope.net">Chris McKenna</a> 30/09/2006.<br>
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