Wyoming Statutes Title 31. Motor Vehicles § 31-5-205. Additional limitations on driving on the left;  exceptions

(i) 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;

(ii) When approaching within one hundred (100) feet of or traversing any intersection or railroad grade crossing unless otherwise indicated by official traffic-control devices;

(iii) When the view is obstructed upon approaching within one hundred (100) feet of any bridge, viaduct or tunnel.

(i) Upon a one-way roadway;

(ii) Under the conditions described in W.S. 31-5-201(a)(ii);

(iii) To the driver of a vehicle turning left into or from an alley, private road or driveway.