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Anecdotally I saw blue led lighting to prevent at a train station for a London Airport (I think Gatwick). The platform guard didn't seem to think it made any di
by Perixoog 11y ago
Anecdotally I saw blue led lighting to prevent at a train station for a London Airport (I think Gatwick). The platform guard didn't seem to think it made any difference, and that it was bought at the end of a budget period.