Any person operating a bicycle upon any public highway or path within the city shall operate the same in accordance with all the provisions contained in the traffic ordinances of the city and with the provisions of R.S.A. 265:143 through 265:153, except that when any provision contained in such ordinances conflicts with any provision in this chapter, the provisions of this chapter shall predominate, or when by their nature they can have no application thereto.
('71 Code, § 5-2) Penalty, see § 70.99