(a) Pedestrians shall be subject to traffic-control signals at intersections as provided in section five, article three of this chapter unless required by local ordinance to comply strictly with such signals, but at all other places pedestrians shall be accorded the privileges and shall be subject to the restrictions stated in this article.
(b) Local authorities are hereby empowered by ordinance to require that pedestrians shall strictly comply with the directions of any official traffic-control signal and may by ordinance prohibit pedestrians from crossing any roadway in a business district or any designated highways except in a crosswalk.