The traffic engineer shall, upon the basis of traffic investigations, erect stop signs within Love Field and Dallas Executive Airport at intersections of roads, lanes, driveways, ramps, taxiways, and runways, and at any place along such roads, lanes, driveways, ramps, taxiways, or runways, where a traffic investigation indicates a traffic hazard exists. A person commits an offense if he operates or drives a vehicle past a stop sign without first having brought the vehicle to a complete stop and ascertaining that forward movement can be made with safety. (Ord. Nos. 14584; 24859)