Signal before turn / lane change100 feet before
Following distance (good weather)3-second rule
Following distance (bad weather)4+ seconds
Following distance (snow-covered)6+ seconds
Hydroplaning begins~35 mph on wet roads
Look ahead in city12 seconds
School bus stop distance25 feet (two-lane road)
No passing near RR crossing100 feet
Stop for RR signals/gates15 feet from rail
Pass cyclist (single-lane road)4 feet clearance
If <4 ft clearanceSlow to 25 mph
Warning device behind disabled vehicle300 feet (≈120 paces)
Rear plate visible at night50 feet
Hands position9 and 3 o'clock, thumbs along face
💡 Maggie's Law treats drowsy driving as recklessness. Rest every 2 hours on long trips. If your vehicle plunges in water, escape through an open window while it floats (3–10 minutes).