Interchange (road)

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/interchange-road

1. What is the primary function?
2. What is the classification basis?
3. What is a road interchange?
4. Why do interchanges use bridges or tunnels instead of crossing at the same level?

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary function?To facilitate grade-separated traffic flow between intersecting roadways, typically highways
2. What is the classification basis?Geometric configuration, traffic volume, and number of directional movements accommodated
3. What is a road interchange?An interchange is a special road junction where roads cross at different heights so cars can keep moving without stopping. It uses bridges, tunnels, or overpasses to separate traffic.
4. Why do interchanges use bridges or tunnels instead of crossing at the same level?By putting roads on different levels, cars don't have to wait for each other, which keeps traffic flowing fast and reduces crashes.

Grade Separation: A junction where traffic streams are vertically segregated using bridges, overpasses, or underpasses.
Controlled-Access Highway: A highway designed for high-speed traffic with limited entry and exit points, such as freeways or motorways.
Ramp Metering: A traffic control system using signals to regulate the rate at which vehicles enter a freeway from ramps.