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The narrow lanes and narrow sights are the major problems which might cause accidents in the tunnels.
This “Tunnel Traffic Mirror” is a set of long and narrow reflection device composed by mirror glass plates. It provides the perfect wide-angle sight for the drivers to learn the traffic condition ahead from far away and effectively avoids the traffic accidents in the tunnels.
Alarm indication signal lines are positioned above and beneath the mirror to guide the drivers in focusing their eye sight on the correct direction.
National Chiao Tung University