Final answer:
The requirement to drive a school bus or passenger bus is determined by federal and state regulations, typically requiring drivers to be at least 21 years old and to possess a CDL with a passenger endorsement.
Step-by-step explanation:
The age requirement to drive a school bus or passenger bus is governed by federal and state regulations. In the United States, these rules are defined by the Department of Transportation and individual state laws. Drivers must typically be at least 21 years old to drive a bus that transports passengers, including school children. This age requirement ensures that drivers have enough maturity and experience on the road.
Furthermore, bus drivers must obtain a Commercial Driver's License (CDL) with a passenger endorsement, which requires additional testing beyond a standard driver's license. These tests assess a driver's knowledge and practical skills in safely operating a large vehicle. Being responsible for the safe transport of passengers, especially children, requires that drivers meet higher standards for licensure.
In contrast to activities like smoking and drinking, which have age restrictions to protect health, the driving age is set to guarantee safety on the roads. In the context of public policy, different types of legal discrimination exist with the intention of maintaining social order, safety, and public health.