In addition, more capacity on the road could improve air quality by reducing idling traffic and another lane beginning at Spout Run would have no impact on the George Washington Memorial Parkway. Yes, the Coleman decision was a 1976 agreement that I-66 would be four lanes. Similarly, at its inception, it was agreed that Metro would only be 103 miles, but as times change we must keep up or suffer worsening traffic congestion. Adding an additional lane outbound on I-66 is part of the solution, and coupled with that would be the continued development of mass transit in the Dulles Corridor and innovative solutions like telecommuting. There's a more important cost associated with congestion, and that's the impact on families.
Every minute spent in the car is time spent away from the family.
And unlike the economic costs of congestion, it's one we can't afford.