# Semi-Truck Retarders: How They Work & What They Do

> Semi-trucks are designed to carry heavy loads. That's why they're weighed on the road to ensure they do not exceed their limitations.

- **Source:** [SlashGear](https://www.slashgear.com/1844224/semi-truck-retarder-what-is-how-work/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6815f9701f68d3e44185afcd)
- **Published:** 2025-05-03
- **Category:** Cars
- **Tags:** #semi #truck #retarders #work #brakes #carry #designed #downhill
- **Canonical:** http://localhost:4321/a/6815f9701f68d3e44185afcd

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_GearOpen's distilled summary. The full original article is published at SlashGear (source link above); GearOpen does not republish the source's full text._