§ 1262. Riding  on  roadways,  shoulders and horse paths. (a) Upon all
roadways, horses shall be ridden or led either near the right hand  curb
or  edge  of  the  roadway or upon a usable right-hand shoulder, lane or
path in such a manner as to prevent undue interference with the flow  of
traffic.
  (b) Persons riding or leading horses upon a roadway shall do so single
file.
  (c)  Any  person riding or leading a horse who is entering the roadway
from a private road, driveway, alley or over  a  curb  shall  bring  the
horse to a full stop before entering the roadway.