It shall be unlawful to operate any motor vehicle at a rate of speed exceeding 25 miles per hour unless otherwise posted.
It shall be unlawful to operate vehicles traveling on any street designated and posted for one-way in a direction other than that which is posted.
It shall be unlawful to operate a motor vehicle or permit the same to be operated within a school zone, as designated by the Mayor and City Council, at a speed greater than 15 miles per hour.