Maryland’s Republican governor Larry Hogan probably improved his chances for reelection to a second term this month by floating bold plans for a 100-mile managed-lanes network to relieve chronic congestion in three of the state’s most constrained commuter corridors, all in metro Washington, D.C.

Hogan’s concept is to add four lanes of capacity to I-495, I-270, and the MD-295 Baltimore-Washington Parkway via toll concessions that he says will require no public subsidy and include large upfront payments to the state.