Rear Occupant Alert (ROA) is motor vehicle manufacturer
Hyundai Motor Company
Hyundai Motor Company, often abbreviated to Hyundai Motors ( )
and commonly known as Hyundai (, ; ), is a South Korean multinational automotive manufacturer headquartered in Seoul, South Korea, and founded in 1967. Currently, the company o ...
's automated vehicle alert system to detect the presence of an occupant in the rear seat of a passenger motor vehicle.
The basic system uses door logic.
If a rear door is opened and closed and the vehicle is turned on, a dashboard alert will activate when the vehicle is then turned off and the driver begins to exit the vehicle.
An enhanced system, called Ultrasonic Rear Occupant Alert, also uses ultrasonic sensors.
If the vehicle is locked and the ultrasonic sensors on the headlining detect movement in the rear seats, the system will flash the
hazards lights and sound the horn for 25 seconds, and again if the system continue to detect movement, for up to eight times total.
Other motor vehicle manufacturers' systems include
General Motors
The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and ...
's Rear Seat Reminder,
Nissan
, trade name, trading as Nissan Motor Corporation and often shortened to Nissan, is a Japanese multinational corporation, multinational Automotive industry, automobile manufacturer headquartered in Nishi-ku, Yokohama, Japan. The company sells ...
's Rear Door Alert, and
Subaru
( or ; ) is the automaker, automobile manufacturing division of Japanese transportation conglomerate (company), conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries), the Automotive industry#By manufacturer, twenty-first ...
's Rear Seat Reminder.
In the United States, a proposed law would make such a system mandatory in passenger vehicles.
References
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Vehicle safety technologies
Hyundai Motor Company