Functionally named the Desert Inn Super Arterial, the DI tunnel is one of the most heavily traveled roadways in the Las Vegas Valley, carrying more than 70,000 daily commuters. Originally constructed in 1996, it was built, in part, to relieve congestion on the Las Vegas Strip by directing vehicular traffic over I-15 and under Las Vegas Boulevard, serving as a major structural bypass for commuting to work and traveling home. Sensors will monitor light outside the tunnel and adjust the light levels inside the tunnel, increasing visibility and safety for drivers. "This will allow natural light through the tunnel system, and allow for driver improvement and safety going through it." "It's a nostalgic look to see those glare screens, and their purpose is to block any kind of glare from oncoming traffic as you travel on DI," Morales said.