Missouri Code of State Regulations
Title 11 - DEPARTMENT OF PUBLIC SAFETY
Division 50 - Missouri State Highway Patrol
Chapter 2 - Motor Vehicle Inspection
Section 11 CSR 50-2.270 - Glazing (Glass)

Universal Citation: 11 MO Code of State Regs 50-2.270

Current through Register Vol. 49, No. 18, September 16, 2024

PURPOSE: This amendment updates inspection and rejection criteria for the safety inspection of windshields in motor vehicles.

(1) All 1936 and later model motor vehicles which were originally equipped with glass must have approved safety glass in all doors, windows and windshields.

(2) Automotive safety glass is marked with the manufacturer's trademark and the words American Standard or the letters AS followed by a number indicating the position in which the glass may be used. Safety glass bearing the following identification may be used in the designated locations: AS1 anywhere in a motor vehicle; AS2 anywhere except windshields; AS3 or AS4 anywhere on school buses except windshields and side windows to immediate right and left of driver location; AS3 and above is permitted at certain other specified locations, such as rear windows of trucks and convertibles.

(3) Types of Damage or Defect.

(A) Outright breakage: Glass that is severely cracked, shattered, or broken to expose sharp edges or missing pieces.

(B) Distortion: A manufacturing defect or other defect that causes a distorted view.

(C) Star break: Vented breaks with cracks radiating from point of impact.

(D) Bull's-eye and half moon: Nonvented circular or half-circular chips not dislodged from glass.

(4) Inspect glazing. The driver's vision area is that area within the normal sweep of the wiper blades above a line measured four inches (4") from the bottom of the windshield. In addition, inspect operation of window at driver's left.

(5) Reject vehicle if-

(A) Required glazing is not present or improper glazing materials are used;

(B) Window at driver's left cannot be readily opened to permit arm signals. (Do not reject if the vehicle is equipped with properly operating turn signals and stoplight);

(C) After-market vision reducing material or other conditions that obscure the driver's vision is on the windshield;

(D) The windshield has any cracks exceeding three inches (3") in length, within the driver's vision area;

(E) The windshield has any unrepaired star breaks, bull's-eyes, or half moons within the driver's vision area;

(F) The windshield has any of the following that are more than two inches (2") in diameter at any area outside the driver's vision area: star breaks; bull's-eyes; or half moons;

(G) The windshield has any distortion; or

(H) Outright breakage, missing pieces, or any break exposing sharp edges is present at any location.

*Original authority: 307.360, RSMo 1967, amended 1971, 1973, 1979, 1999.

Disclaimer: These regulations may not be the most recent version. Missouri may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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