Microphones, speech recognition, and acoustic guidance enable touchless sanitary cell operation and orientation for visually impaired users.
A movable suction opening near the tank bottom improves emptying of irregular wastewater tanks while limiting blockages and contamination.
A wheelchair-accessible aisle links boarding doors, seating, galleys, and sanitary units to improve inclusion and space use in rail vehicles.
Direct tank-fed fuel cell process water is treated in or after the water tank to meet drinking water quality with less onboard weight and space.