Nohekhan, Amir; Zahedian, Sara; Farokhi Sadabadi, Kaveh
Benefit Summary HTML

I-66 is a major east-west highway that connects downtown Washington D.C. to Northern Virginia. Since it is the only major east-west highway between D.C. and the populous Virginia suburbs, I-66 experiences heavy traffic congestion especially during peak hours.

To alleviate congestion, public authorities initially implemented peak period High Occupancy Vehicle (HOV) restrictions along the portion of I-66 inside the I-495 beltway. In 2017, the Virginia Department of Transportation (VDOT) altered the restrictions on this I-66 segment and switched from HOV to High Occupancy/Toll (HOT) lanes. After the change, users can access the lanes during peak periods by paying a toll, which is dynamically set based on demand, or by having multiple people in their vehicle.   

Created Date
Hyperlink Exit Door
Priority Research Area
Publication Sort Date
Transportation Engineering, Volume 4, June 2021
Result Type
Investigating the impacts of I-66 Inner Beltway dynamic tolling system
Project Category
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