Speed limits when no sign is posted
SCHOOL15approaching a school crosswalk
TOWN25business or residential
HIGHWAY55open highway or city freeway
OPEN65designated open highway
RURAL75rural freeway
White speed sign = legal maximum. Orange speed sign = only a recommendation. (p. 40)
Distances (yellow border = commonly missed)
3 secminimum following distancecount one-thousand-one…three
6 secfollowing distance on slippery roads or in raindouble it
100 ftsignal before every turnabout 4 seconds
100 ftno passing near an intersection, rail crossing, bridge or tunnel
15 ftno parking near a fire hydrant
20 ftno parking near a crosswalk at an intersection
50 ftno parking near a railroad crossing
15 ftstop at least this far from railroad trackswhen lights flash or the gate is down
500 ftdim high beams for oncoming cars
200 ftuse low beams when following a car
500 ftstay behind a fire truck on a call
300 ftstay behind a police car on a call
3 ftminimum space when passing a bicycle
2 ftgap from the car ahead when you start to parallel park
1 blockhow far ahead to look while driving
1.5 secaverage time to notice + react0.75 + 0.75
Alcohol, points & penalties
0.00legal BAC if you're under 21zero tolerance · 2-yr suspension
0.08DUI for 21 and overcan be DUI below this if impaired
0.04DUI in a commercial vehicle
0.15Extreme DUI0.20+ is even harsher
12 molicense suspension for refusing a DUI test24 mo if 2nd within 84 months
8 ptsin 12 months → Traffic Survival School
3 ptsspeeding · driving over a gore areamost others: 2
6 ptsleaving the scene of a crashthe LOWEST of the serious ones (DUI/reckless = 8)
Permit & license rules
15½minimum age for a graduated permit18 for an operator permit
21+age of licensed driver who must sit beside you
12 mohow long a permit is valid
6 mohold your permit before a graduated license
30 hrssupervised practice, 10 of them at nightif no driver's ed
12–5no driving midnight to 5 a.m. (first 6 months)with exceptions
1max passengers under 18 (first 6 months)siblings don't count
10 daysreport a name or address change
25/50/15minimum insurance ($ thousands)
< 5child must be in a car seat5–8 until 4 ft 9 in tall
< 16driver must make these passengers buckle up
≤ 12kids this age shouldn't ride in frontair bags
Picture these














Arizona-only situations
Dust stormPull completely off, turn ALL lights off, foot off the brake, stay buckled."Pull Aside, Stay Alive"
Move OverAny vehicle with flashing lights on the shoulder: move over a lane, or slow down.includes tow trucks & private cars
Flooded washDon't cross. Drive around barricades and you can be billed for the rescue.
Dark signalTreat a dead traffic light as a 4-way stop.
Flash redSame as a stop sign. Flashing yellow = slow & caution.
Fender benderNo injuries and car drives? Move it out of the lanes, then call."quickly clear"