ASL Prius audio is a system that allows drivers to use American Sign Language to communicate with others while driving. The system consists of a camera mounted on the dashboard, which captures ASL gestures and translates them into spoken English. The driver can then respond using either ASL or English.
The ASL Prius audio system was designed by Toyota engineer Mark Yamanaka, who is himself deaf. He created the system as a way to improve communication between deaf and hearing drivers. The ASL Prius audio system has been available in Toyota vehicles since 2013, and has been well-received by the deaf community.