Turn signal in city100 feet before
Turn signal outside city300 feet before
Following distance3-second rule
Sight-distance / poor weather4-second rule
School bus stop distance30 feet minimum
No passing near hill / curveWithin 1/3 mile
Pass on 2-lane (overtake)+10 mph allowed
Dim headlights (oncoming)1,000 feet
Dim headlights (following)500 feet
High beam range / Low beam350 ft / 100 ft
Horn audible from200 feet
Pass cyclist (2-lane)~5 feet clearance
RR crossing stop distance≥ 15 feet from rail
Move Over (50+ mph roads)Slow ≥ 20 mph below limit
💡 Headlights are required from 30 minutes after sunset to 30 minutes before sunrise — and any time visibility is less than 500 feet. Use low beams in fog, heavy rain, sleet, snow, or dust (p. 14).