When yield right-of-way signs are placed, erected or installed upon streets, roads or highways intersecting a through street at the entrance thereto, or at the entrance to any intersection, every driver of a motor vehicle shall, in obedience to such signs, slow down and yield the right-of-way to any vehicle in movement on the main-traveled or through street which is approaching so as to arrive at the intersection at approximately the same time as the vehicle entering the main-traveled or through street.
(Ord. passed 6-5-1991)