Who are the drivers?
A driver is a person who drives a vehicle. These can be motorized or non-motorized vehicles.
When someone is pushing a moped/bicycle, is it a driver?
No. A person pushing a broken-down moped is a pedestrian, but the pushing must be done on the pavement.
When someone is pushing a motorcycle, is it a driver?
Yes. A person pushing a broken-down moped is a driver, must have a license and a helmet. And the pushing must be done on the pavement.
How is horserider/companion of animals called?
It is a driver.