Use of the E-ZPass electronic payment system has grown exponentially across the Washington region in recent years as the network of toll lanes has expanded in the Interstate 95 corridor with new facilities from Stafford County to just north of Baltimore. Both Maryland and Virginia are actively promoting E-ZPass, hoping to reduce cash payment at toll plazas — where the option exists — and to encourage the seamless use of all-electronic toll facilities such as the 495 Express Lanes and 66 Express Lanes in Virginia and the Intercounty Connector in Maryland. In that spirit, Maryland announced last week that it...