Tunnel light how to solve

We all know that general tunnel to set up the lighting during the day. But there are plenty of tunnel lighting use part Bai Tiankai lights off part of the lamp, and at night the street lamp open, all this is just the opposite. During the day, the driver of the tunnel in

we all know that general tunnel to set up the lighting during the day. But there are plenty of tunnel lighting use part Bai Tiankai lights off part of the lamp, and at night the street lamp open, all this is just the opposite. During the day, the driver will appear when you enter the tunnel vision problems as follows: just enter the tunnel due to the brightness of the tunnel outside during the day a lot of high relative to the tunnel, if the tunnel is long enough, the driver to see is a black hole, this is the 'black hole' phenomenon; If the tunnel is very short, in front of the pilot is a 'black box'. After entering the tunnel by bright outside into a dark tunnel, visual will have to adapt to the time, and then you can see the inside of the tunnel, this phenomenon is called 'adaptive lag phenomenon'. The tunnel exit export, there will be a very bright for the pilot will produce strong glare, so couldn't see the road, LED street lamp, prone to traffic accidents. This is usually divided into entrance tunnel lighting lighting, interior lighting and lighting for export. The more strict with entrance lighting, request from the brightness of the similar with the outside world gradually reduced. Specifically, the brightness of the tunnel entrance lighting during the day according to the brightness of the outside the tunnel, the speed, the view and determines the length of the tunnel at the entrance. At night, on the other hand, the tunnel lights and outside road illumination standards as can be