A “Private bus” is defined as:

1. A bus that is not operated on a fixed route.
2. Correct answer: A bus that is not a public service vehicle.
3. A privately owned bus.
4. A bus for touring and traveling purposes only,

WhyA private bus is a bus that is not a public service vehicle. What matters is not the owner or the route, but that it does not carry the public under a public transport license.