A vehicle including a communication system for a disabled person may include: a motion capture unit that recognizes sign language of a passenger of the vehicle; an input unit that receives a voice or characters from the passenger; a database that stores sign language information; a control unit that is communicatively coupled to the motion capture unit and the input unit, the control unit being configured to translate the sign language recognized by the motion capture unit using the sign language information stored in the database, and to convert a voice received through the input unit into characters; and an output unit that is communicatively coupled to the control unit, the output unit being configured to output the sign language translated by the control unit as a voice or characters, and to output the voice converted by the control unit as characters.

Examples are disclosed for systems and methods for user interfaces of a vehicular environment, especially for autonomous vehicles wherein an orientation or attention of the vehicle occupants is not constrained to a direction of motion. In one embodiment, a system for providing visualizations within a vehicular environment comprises at least one touch-sensitive display device positioned adjacent to at least one seat within the vehicular environment and configured to display the visualizations to an occupant of the at least one seat, the at least one touch-sensitive display device moveable from a first position in front of the seat to a second position at an interior wall of the vehicular environment.

Various implementations of illumination systems are described herein. For example, the illumination system includes a light guide having an outer surface and an inner surface that extend between a first end and a second end of the light guide, and at least one light source disposed adjacent the first end of the light guide. The light source emits infrared or visible light into the first end of the light guide. The light guide transmits the light from the light source through at least a portion of the outer surface of the light guide. In addition, the system may include a second light source disposed adjacent the second end of the light guide. The second light source emits infrared or visible light into the second end of the light guide.