I think it is illegal because i see it quite dangerous. When my
school dismissed us, i go to the bus stop and saw cyclist riding on
the pavement, nearly knocked down someone who was walking on the
path. So it was the best of not cycling on those dangerous
paths.
When i was young, my sister and i don't ride our tricycles on
pedestrian paths. We rode our tricycles on the park instead as it
was safer. It was really fun. Riding tricycles/bicycles in the park
is the best. However, my siblings and i don't ride
tricycles/bicycles anymore as we were growing and our
tricycles/bicycles are getting dusty in our storeroom. So, at my
age, i still can't cycle on a bicycle. 