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The 91 Express Lanes is a toll road in Southern California that spans 18 miles from the Orange/Riverside County line to the State Route 55 in Anaheim. These lanes were the first high-occupancy toll (HOT) lanes in the United States and were developed to alleviate congestion on the heavily traveled Riverside Freeway (State Route 91). The lanes are managed by the Orange County Transportation Authority and provide a faster and more reliable commute for drivers willing to pay a toll. The 91 Express Lanes are open 24 hours a day, 7 days a week, and are equipped with electronic tolling systems to facilitate a seamless and efficient travel experience. This innovative transportation solution has been successful in reducing traffic congestion and improving mobility in the region.