Nevada bars a U-turn where a curve, hill, rain, or fog blocks your view. How far must you be able to see in each direction to make the turn legally?

Confuses the 500-foot rule for U-turns near a grade with the 200-foot rule for curves, hills, rain, and fog. Both figures sit in the same U-turn list, so drivers who remember only one number default to the larger, safer-sounding value. This answer defaults to the larger of two U-turn visibility figures listed together when only one is recalled.

Halves the required visibility; the manual sets the minimum at 200 feet in each direction. Drivers who signal turns 100 feet ahead on city streets sometimes carry that figure into every 'how far' rule. This answer borrows the 100-foot city-street signal-ahead distance and applies it to a sight-line rule.

Overstates the general visibility rule; the manual sets 200 feet for curves, hills, rain, and fog. The 300-foot signal-ahead distance for open highways sticks in memory and gets pressed into service as the U-turn sight line. This answer reaches for the football-field 100-yard mental image drivers use when picturing what 'clear view' should cover on a highway.