Dodge Durango 2012 Owner's Manual page 245

When displayed, static grid lines will illustrate the width
of the vehicle while a dashed center-line will indicate the
center of the vehicle to assist with aligning to a hitch/
receiver. The static grid lines will show separate zones
Zone
Red
Yellow
Green
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 243
that will help indicate the distance to the rear of the
vehicle. The following table shows the approximate
distances for each zone:
Distance to the rear of the vehicle
0 - 1 ft (0 - 30 cm)
1 ft - 3 ft (30 cm - 1 m)
3 ft or greater (1 m or greater)
3