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by phpnode 4039 days ago
In the UK a lot of taxi drivers seem to believe this, the superstition is reinforced whenever they happen to flash when the lights were about to change anyway. It's also a comfort thing, similar to a placebo button[0] - people want to believe that they have some control over the mundane parts of their lives.

[0] http://en.wikipedia.org/wiki/Placebo_button