Final answer:
The initial terminal and road air brake test is referred to as the Class I Air Brake Test, which is a mandatory safety check process for large vehicles with air brake systems.
Step-by-step explanation:
The initial terminal and road air brake test is also known as a Class I Air Brake Test. This is a detailed sequence of safety checks and tests that drivers must perform on the air brake systems of large vehicles like trucks and buses before beginning a trip (initial) and after bringing the vehicle into the terminal or service facility (terminal), as well as during road operations if necessary (road).
The purpose of the Class I Air Brake Test is to ensure that all components of the air brake system are functioning properly and to ensure safe operation of the vehicle during transit.