Rate of accidents depends on location within tunnelsOnce drivers are acclimatized to the special environment inside, they tend to reduce speed and move away from the tunnel wall, causing the rate of accidents to decrease.
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The instinctive thought might be that a tunnel, visually, suggests a constriction up ahead. The lanes are just as wide, but the visual clue is powerful. A dark hole up ahead, even when we have approached it a thousand times, is still a dark hole up ahead.
Make sure you get in lane early. Make sure your lights are on. It's really important to see and be seen – that sunny day won't make any difference when you're in a tunnel. Keep an eye out for speed limits, as they might change as you approach a tunnel so stay alert for signs near or on the tunnel entrance.
At 24 kilometers or just over 15 miles in length, Norway's Lærdal Tunnel is the longest tunnel in the world. Assuming no traffic, it takes about 18 minutes to drive through this road tunnel if you're going the speed limit of 80 km/hr. Of course, traffic can definitely build up in the tunnel.
Explanation: Before entering a tunnel, you should switch on your dipped headlights, as this will allow you to see and be seen. In many tunnels, it's a legal requirement. Don't wear sunglasses while you're driving in a tunnel.
Always keep your headlights on in a tunnel.You must always keep your headlights on in a tunnel, as the law says that headlights must always be used when a vehicle is being driven in the dark or dim light, or if visibility has deteriorated due to the weather or other reasons.