Specifications include, but are not limited to: Technical specifications define requirements for a heavy-duty, low-floor transit bus, which, by the selection of specifically identified alternative configurations, may be used for both suburban express service and general service on urban arterial streets. Buses shall have a minimum expected life of twelve (12) years or 500,000 miles, whichever comes first, and are intended for the widest possible spectrum of passengers, including children, adults, the elderly and people with disabilities. TriMet is interested in standard 60’ diesel articulated buses, 60’ diesel hybrid/electric articulated buses, and 60’ battery-electric articulated buses, all with BRT stylized front caps. TriMet requires on-board diagnostics for Multiplex System, ABS, engine, transmission, hybrid propulsion system, articulation joint, CCTV, HVAC, and all systems connected to J1708 and J1939.