Which factor is NOT considered a part of the Highway Transportation System?

The Highway Transportation System (HTS) is a complex system that includes three main components: road users, motor vehicles, and traffic laws. These components work together to ensure safe and efficient travel on the road.

Road users encompass all individuals who interact with the transportation system, including drivers, pedestrians, cyclists, and passengers. Motor vehicles refer to the various types of vehicles that operate on the roads, such as cars, trucks, buses, and motorcycles. Traffic laws are the rules and regulations established to maintain order and safety on the roads, guiding the behavior of all road users and vehicles.

Insurance companies, while they play a significant role in the overall driving and vehicle experience by providing coverage and financial protection, are not considered part of the Highway Transportation System itself. Their primary function is related to risk management and providing support after accidents, rather than being a fundamental component of the transportation network that directly impacts how the system operates.