Parking Assistance System (PAS) as the name suggests, assist the driver in safe parking. PAS helps in detecting the distance between the vehicle and obstacle. The system emits Ultrasonic sound waves and then receives the reflected waves, detect the side of nearest obstacle, and calculate the distance from the nearest obstacle. The indication differs in different models. There are different types of indicating devices:

Visual: LED (light Emitting Diodes), VFD (Vacuum Florescent Display), Visual Image with OSD (indicating side/distance of obstacle)

Audio: Buzzer and Human Voice