Dodge 2007 Power Wagon - Manual (Page 159)

WARNING!
Do not drive with the load floor in the up position.
When stopping fast or in an accident, the load floor
could move to the down position causing serious
injury.
4. Reverse the procedure to put the load floor back in the
secured down position before you operate the vehicle.
Load Floor Securing Straps
158 UNDERSTANDING THE FEATURES OF YOUR VEHICLE