Those intersections described in Chapter 75 Schedule VII, attached hereto and made a part hereof, are hereby declared to be "Yield Right-of-Way" intersections when entered from the streets last named. Where proper signs are placed, erected, or installed at such intersections, no driver of a vehicle shall enter or cross those intersections until he has first determined that no conflict with traffic will be involved.
('70 Code, Ch. E, Art. VI § 3) Penalty, see § 70.99