ET-Plus Guardrail

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/et-plus-guardrail

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. How big is ET-Plus Guardrail?High-speed highways, freeways, and median separations
2. What is the system classification?Roadside energy-absorbing and redirective barrier
3. What is the developer and manufacturer?Trinity Industries
4. How does the ET-Plus Guardrail help keep cars safe?When a car hits it, the guardrail slides and twists, so the impact lasts longer and the car slows down more gently, which keeps people inside safer.
5. Why does the ET-Plus Guardrail bend when a car hits it?The guardrail bends in a predictable way because its steel pieces are shaped to twist and slide when hit, turning the car’s energy into the metal’s movement.

Impact Mitigation: The process of reducing the harmful effects of a collision or impact.
Vehicle Dynamics: The study of how vehicles behave when in motion, including their response to forces.
Crash Physics: The scientific principles governing the forces and energy transfer during a vehicle collision.
Deceleration Forces: The forces experienced by an object when it slows down rapidly.