What phrase must windshield glazing contain to indicate compliance?

Windshield glazing must contain the phrase "American Standard" or "AS" followed by a number to indicate compliance with applicable safety standards. This certification is essential because it signifies that the glass has been tested and meets the necessary performance requirements for safety and durability. Proper standards are crucial for ensuring that the windshield can withstand impacts and provide adequate visibility and protection for passengers. Recognizing this phrase allows vehicle inspectors and consumers to verify the glass's reliability and adherence to safety regulations, which is vital for the overall safety of the vehicle.