Answer: By utilizing an overpass interchange, traffic can flow smoothly on both the road with little traffic and the busy expressway, enhancing safety and efficiency for drivers.
Explanation: The interchange used when a road that has little traffic crosses a busy expressway is called an overpass or an overbridge. An overpass is a bridge that allows the road with lower traffic volume to pass over the busy expressway, preventing the need for the two roads to intersect at the same level.
This type of interchange is designed to improve safety and traffic flow by separating the two roads vertically. It allows vehicles on the road with lower traffic volume to continue their journey without having to stop or yield to the heavy traffic on the expressway.
Here is a step-by-step explanation of how an overpass interchange works:
1. The road with little traffic is elevated or raised above the busy expressway using a bridge structure.
2. On-ramps and off-ramps are built to provide access to and from the overpass.
3. Drivers on the road with little traffic can enter the overpass using the on-ramps and continue their journey without having to stop or merge with the traffic on the expressway.
4. Drivers on the expressway can continue their journey without any interruptions from the road with little traffic.
5. The elevated design of the overpass ensures that the two roads do not intersect at the same level, minimizing the potential for accidents and congestion.
By utilizing an overpass interchange, traffic can flow smoothly on both the road with little traffic and the busy expressway, enhancing safety and efficiency for drivers.