Practice question

The three main parts of the Highway Transportation System are

  1. Cars, trucks, and buses
  2. Motorcycles, pedestrians, and animals
  3. People, vehicles, and the roadway
  4. Traffic lights, roads, and signs

Answer: C — People, vehicles, and the roadway

The three main parts of the Highway Transportation System are people, vehicles, and the roadway. While cars, trucks, and buses are types of vehicles, they are not the only types and do not encompass all vehicles on the road. Motorcycles, pedestrians, and animals are all important and common users of the roadway, but they do not make up the three main parts. Traffic lights, roads, and signs are crucial components of the roadway, but they do not include all aspects of the transportation system and do not account for the people and vehicles that utilize the system. Therefore, C is the most accurate and complete answer.

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