The plan for the Eastern Corridor is based on solving some very real needs for alleviating transportation problems throughout the region. These problems are expected to increase over time due to population and employment growth.

Implementing the plan will help reduce congestion that causes delays on Corridor roadways. Less congestion will reduce vehicle emissions and improve air quality. The plan's recommendations are also expected to reduce accidents. The economy will benefit as commercial traffic experiences less congestion and delays.

The plan's recommendations for expanding transit means many Corridor residents will no longer have to depend exclusively on automobiles for transportation. Those who do not have an automobile—youths, older adults, the economically disadvantaged—will have a viable alternative to auto travel. There will be better access to jobs within the study area, as well as improved access for Corridor residents to jobs throughout the metropolitan area. Rail transit stations may promote development that reduces urban sprawl and related traffic problems.