Final answer:
The primary purpose of separating traffic going in the same direction into multiple lanes is to enhance traffic flow and safety. It allows for a smoother flow of vehicles, reduces congestion, and provides designated lanes for different speeds and types of vehicles.
Step-by-step explanation:
The primary purpose of separating traffic going in the same direction into multiple lanes is to enhance traffic flow and safety. By dividing the traffic into different lanes, it allows for a smoother flow of vehicles and reduces congestion. It also helps in preventing accidents by providing designated lanes for different speeds and types of vehicles.
For example, on a three-lane freeway, slower vehicles can stay in the right lane, while faster vehicles can use the left lane. This separation of speeds reduces the likelihood of collisions.
Furthermore, multiple lanes provide a buffer zone between vehicles, giving drivers more space and time to react to sudden changes or emergencies, which ultimately enhances safety on the road.