The Laerdal Tunnel in Norway is not just any tunnel. It is 15.2 miles long and runs under a stunning mountain range. This makes it the longest road tunnel in the world. Drivers can stay underground for up to 20 minutes without seeing sunlight. The tunnel connects the towns of Laerdal and Aurland. It is a key route from Oslo to Bergen. Built in about five years, the tunnel opened in November 2000. It cost around £80 million. Its design is special. Instead of a plain tunnel, it has wider cave-like sections at regular spots. These breaks keep drivers from feeling bored or tired. Some areas are big enough for cars to safely pull over. One of the tunnel’s unique features is its lighting. Warm blue and orange lights brighten different sections. This colorful lighting helps drivers stay alert and less tired. It also adds to the tunnel’s beauty. Safety comes first in the Laerdal Tunnel. It has a powerful ventilation system that keeps the air clean. Fifteen cameras monitor traffic and accidents. Automatic systems can close the tunnel quickly if needed. Safety points every 500 meters provide fire extinguishers, emergency phones, and other vital equipment. Many visitors call the tunnel an engineering marvel. They are amazed by its size, design, and comfort. To drive through it feels like a special adventure. The Laerdal Tunnel is both a vital road and a popular attraction. It shows Norway’s skill in building smart, people-friendly infrastructure.