Okla. Stat. tit. 47, § 47-14-124: Commercial class A license - Hazardous material

endorsement exception.

Any person driving under a commercial class A license shall not

be required to obtain a hazardous material endorsement pursuant to

49 C.F.R. Section 383 if the person is:

1. Acting within the scope of the license holder's employment

as an employee of a custom harvester operation; and

2. Operating a service vehicle that is:

a. transporting diesel in a quantity of three thousand

seven hundred and eight-five (3,785) liters, or one

thousand (1,000) gallons or less, and

b. clearly marked with a "flammable" or "combustible"

placard, as appropriate.