This project will focus on developing an graphical information interface for human passengers in autonomous vehicles providing situational awareness and enabling passengers to intervene as desired and necessary. Following up on last semester's work, this project will focus on the following aspects: 1) Conduct initial interface tests using a smart phone. 2) Implement, test in the autonomous vehicle(Boss). 3) Tune the GUI design based on the experiment. 4) Design bidirectional communication interface between the user and the vehicle.