Okla. Stat. tit. 47, § 11-702
A. The driver of any :
5. Commercial motor vehicle required to be placarded for hazardous materials,
before crossing at grade any track or tracks of a railroad, shall stop such vehicle within fifty (50) feet but not less than fifteen (15) feet from the nearest rail of such railroad and while so stopped shall listen and look in both directions along such track for any approaching train, and for signals indicating the approach of a train, except as hereinafter provided, and shall not proceed until he can do so safely. After stopping as required herein and upon proceeding when it is safe to do so, the driver of any said vehicle shall cross only in such gear of the vehicle that there will be no necessity for changing gears while traversing such crossing and the driver shall not shift gears while crossing the track or tracks.
Laws 1961, HB 556, § 11-702, emerg. eff. September 1, 1961; Amended by Laws 1997, HB 1432, c. 201, § 6, eff. November 1, 1997 (superseded document available); Amended by Laws 2001, HB 1086, c. 309, § 2, eff. November 1, 2001 (superseded document available).