While crossing the road, the head of an organised unit of school youth
or of an organised group of children, who are not subject to compulsory school attendance, or guide of persons with health disability
a) is authorized to give instructions for stopping a vehicle,
b) is authorized to give instructions for stopping a vehicle, if he is older than 25 years,
c) is authorized to give instructions for stopping a vehicle in a municipality from 7:00 a.m. until 3:00 p.m.
