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AFAIK yellow + green is only ever used for turning traffic and is always installed together with a regular 3-bulb traffic light for the other directions. Stand-
by iggldiggl 3y ago
AFAIK yellow + green is only ever used for turning traffic and is always installed together with a regular 3-bulb traffic light for the other directions. Stand-alone two-bulb traffic lights are always red + yellow, with red on top, just as usual.