Okla. Stat. tit. 47, § 47-11-306: Further limitations on driving to left of center of

roadway.

(a) No vehicle shall be driven on the left side of the roadway

under the following conditions:

1. When approaching or upon the crest of a grade or a curve in

the highway where the driver's view is obstructed within such

distance as to create a hazard in the event another vehicle might

approach from the opposite direction;

2. When approaching within one hundred (100) feet of or

traversing any intersection or railroad grade crossing unless

otherwise indicated by official traffic control devices;

3. When the view is obstructed upon approaching within one

hundred (100) feet of any bridge, viaduct or tunnel.

(b) The foregoing limitations shall not apply upon a one-way

roadway; nor under the conditions described in Section 11-301,

subsection (a), paragraph 2 of this title, nor to the driver of a

vehicle turning left into or from an alley, private road or

driveway.