"The new 'contraflow' lane restricted to high-occupancy vehicles is one of only two such highway configurations in the nation. It will provide five lanes of traffic inbound during morning rush hours, with three outbound. Through a system of moveable concrete barriers, the lanes will be switched for the evening rush hours, with five lanes of traffic going south, or outbound."
—Thomas C. Palmer Jr., "The relief is just ahead for Expressway driver," The Boston Globe