Okla. Stat. tit. 47, § 47-11-701: Obedience to signal indicating approach of train

A. Whenever any person driving a vehicle approaches a railroad

grade crossing under any of the circumstances stated in this

section, the driver of such vehicle shall stop within fifty (50)

feet but not less than fifteen (15) feet from the nearest rail of

such railroad, and shall not proceed until he can do so safely. The

foregoing requirements shall apply when:

1. A clearly visible electric or mechanical signal device gives

warning of the immediate approach of a railroad train or other on-

track equipment;

2. A crossing gate is lowered or when a human flagman gives or

continues to give a signal of the approach or passage of a railroad

train or other on-track equipment;

3. A railroad train or other on-track equipment approaching

within approximately one thousand five hundred (1,500) feet of the

highway crossing emits a signal audible from such distance and such

railroad train or other on-track equipment, by reason of its speed

or nearness to such crossing, is an immediate hazard;

4. An approaching railroad train or other on-track equipment is

plainly visible and is in hazardous proximity to such crossing; or

5. The tracks at the crossing are not clear.

B. No person shall drive any vehicle through, around or under

any crossing gate or barrier at a railroad crossing while such gate

or barrier is closed or is being opened or closed or fail to obey

the directions of a law enforcement officer at the crossing.

C. The operator of any Class A, B, or C commercial vehicle not

required to stop at all railroad crossings, as prescribed in Section

11-702 of this title, shall slow down and check that the tracks are

clear of an approaching train.