When respective signs are placed in certain streets, no person shall park a vehicle for longer than 15 minutes at any time upon any street described in Chapter 76 Schedule II, attached hereto and made a part of this chapter. A change of position of vehicle from one point directly to another point within the same block, shall be deemed one continuous parking period.
('70 Code, Ch. E, Art. V § 7) Penalty, see § 70.99