You want to make a U-turn on a highway outside city limits. No sign prohibits it. Drivers who come from either direction can see your vehicle from about 700 feet away. May you make the U-turn?

Correct answer: No, because outside a city, drivers from each direction must be able to see you from 1,000 feet.

Why

A vehicle that makes a U-turn moves slowly across the whole road, so drivers from both directions need time to see it and stop. Oregon sets the distance at 500 feet within city limits and 1,000 feet outside, where speeds are higher. Hills, curves and trees often limit how far other drivers can see, so choose a place with a long, clear view.

Verified against Oregon Driver Manual · U-turns · p. 49