Inside the Beltway was always HOV-only during rush hour. It was originally HOV-3; but, was reduced to HOV-2. If the goal was to decrease the number of cars and

Inside the Beltway was always HOV-only during rush hour. It was originally HOV-3; but, was reduced to HOV-2. If the goal was to decrease the number of cars and increase car-pooling, they could have gone back to HOV-3.