One of the keys to the success of the BiLevel commuter rail car has been its ability to adapt to meet changing needs and requirements. The latest steps in that evolution include BiLevel cars equipped with a Crash Energy Management system, full width cab, upgrades to door and air conditioning systems, increases in energy efficiency and enhancements to passenger amenities. While fully complying with FRA and APTA standards, it is a light and cost-efficient double-deck car.