Iowa DMV Cheat Sheet: Key Numbers
The numbers people mix up most often, on one page. Print it or save it as a PDF and review it before your test.
Speed limits by state
- Business district
- 20 mph
- Residential district
- 25 mph
- Rural interstate (max)
- 70 mph
Drunk driving laws by state: BAC limits
- Drivers 21+
- 0.08%
- Under 21
- 0.02%
- Refusing a chemical test (1st time)
- 12 months
Cell phone laws for drivers by state
- No phone at all for drivers under
- 18 years old
Parking distances by state
- Fire hydrant
- 5 feet
- STOP sign or signal
- 10 feet
- Fire station driveway
- 20 feet
- Railroad crossing
- 50 feet
- Wheels from the curb
- 18 inches
School bus, move over and bicycle passing laws by state
- Stop from a school bus at least
- 15 feet