Okla. Stat. tit. 47, § 47-12-406: Safety glazing material or safety glass - Standards -

Identification markings - Sale or replacement.

A. A motor vehicle as specified herein shall not be registered

thereafter unless such vehicle is equipped with safety glazing

material or safety glass of a type prescribed in this section

wherever glazing material or glass is used in doors, windows, and

windshields. The foregoing provisions shall apply to all passenger

cars, lightweight vehicles, buses, school buses, and church buses,

but in respect to trucks, including truck-tractors, the requirements

as to safety glazing material or safety glass shall apply to all

glazing material and glass used in doors, windows, and windshields

in the drivers' compartments of such vehicles.

B. The term "safety glazing materials" or "safety glass" means

glazing materials or glass so constructed, treated, or combined with

other materials as to reduce substantially, in comparison with

ordinary sheet glass or plate glass, the likelihood of injury to

persons by objects from exterior sources or by the safety glazing

materials or safety glass when they may be cracked or broken.

C. All safety glazing materials and safety glass shall bear the

manufacturer's trademark and the words "American Standard" or the

letters "AS" followed by a number indicating the position in which

the glass shall be used. Safety glazing materials or safety glass

bearing the following identification markings shall be used in the

designated locations:

1. Laminated safety glass marked "AS-1" is required in

windshields and is acceptable at any other location in the vehicle;

2. Laminated safety glass marked "AS-14" is required in

windshields and is acceptable at any other location in the vehicle;

3. Laminated or tempered safety glass marked "AS-2" is

acceptable for use at any location in the vehicle except the

windshield;

4. Laminated or tempered safety glass marked "AS-3" is

acceptable anywhere on school buses except in windshields and side

windows to the immediate right and left of the driver's location;

5. Rigid plastic safety glazing material marked "AS-4" or "AS-

5” is acceptable anywhere on school buses except in windshields and

side windows to the right or left of the driver's location;

6. Flexible plastic safety glazing material marked "AS-6" or

"AS-7" is acceptable for use in rear windows of soft tops, flexible

curtains, or readily removable windows; and

7. Wire glass marked "AS-8" or "AS-9" is acceptable for use in

folding doors, standee and rearmost windows of buses, or windows to

the rear of the driver in trucks and truck-tractors.

D. No person shall sell, or make replacements of glass, safety

glazing materials, or safety glass on motor vehicles, or sell glass,

safety glazing materials, or safety glass cut to size to fit

windshields, door glass, or window glass of a motor vehicle in

violation of the provisions of this title.