Deputies called for slowing the replacement of LED street lamps
Date:2011-06-16 14:04
Status:Be resolved
Question:admin
trance of high brightness, sharp vision is poor, known as the black box effect, when the driver of the tunnel exit is more difficult to adapt to the brightness; if the tunnel is longer, when the vehicle Just enter the tunnel, the export will feel very black, near the exit can not even recognize the situation, known as the black hole effect, and vehicles in long tunnel running for some time, close to the tunnel exit, the exit light and the darkness of the tunnel the formation of a strong visual d
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