.11 Windshield or Windscreen.

Procedures: Reject Vehicle If:
Vehicle Glazing.
Windshields or windscreens are not required, but if installed, they shall be free of cracks, discoloration, or scratches which create any vision obstruction. They shall be an approved type and be mounted so that the driver's vision is not obstructed.
(1) Windscreen obstructs or obscures the driver's vision.
(2) Any support or stiffener device is mounted in the driver's forward line of vision.