All of the systems tested met, and many exceeded, NHTSA's
guideline for the minimum specifications for image quality.

Rear-view cameras are a great supplement for drivers and are
especially helpful for viewing the first 10 feet behind the vehicle,
which are the most hazardous in terms of back-over risk for
young children

The National Highway Traffic Safety Administration (NHTSA)
requires a rear-view image in all passenger vehicles beginning in
2016, with full compliance by May 2018.