Final answer:
The Highway Transportation System (HTS) consists of roads, vehicles, and users (including drivers, passengers, and pedestrians).
Step-by-step explanation:
The roads, also known as highways or interstates, provide a network of routes for transportation. They are designed and constructed to accommodate the movement of vehicles safely and efficiently. The vehicles are the means of transportation that travel on the roads. They can be privately owned, commercial, or public transport vehicles.