Specifications include, but are not limited to: All vehicles are required to have either an E-ZPass or E-ZPass Flex™. The Flex is required to utilize the HOV exception. Free passage will be provided to motorcycles and vehicles with the minimum required HOV occupants, with the Flex transponder in HOV-ON mode, including buses. The road would be restricted to vehicles with no more than 2 axles. Each entrance to the I-64 Express Lanes will have dynamic destination pricing signs that display current toll rates that are to be assigned to a motorist’s trip. ; • The toll system integrator would design, install, operate (perform image review and trip construction) and maintain the electronic toll collection system and related traffic management field devices on I-64 Express Lanes Expansion. • The construction firm would install the required civil infrastructure, including toll gantries, barriers, retaining walls, generators, equipment shelters, cabinets, concrete pads, conduit, sign structures, traffic detectors and poles.