Loose objects in vehicle — Iowa Permit Test
Loose objects in vehicle on the Iowa permit test — 2 rules, each with the reason behind it and a question on it while it is fresh.
The rules
At 60 mph, a 20-pound object can exert well over 1,000 pounds of force in a sudden stop.
A bag or toolbox on the back seat keeps moving when the car stops. It can hit someone as hard as a heavy weight.
At 60 miles per hour, a 20-pound object has the potential to exert well over 1,000 pounds of force in a sudden stop.
Make sure there are no objects on the floor that could roll under the brake pedal.
A bottle that rolls under the pedal can stop you from pressing the brake at the moment you need it most.
Also, make sure there are no objects on the floor that could roll under the brake pedal making it difficult or impossible to apply the brakes.
On the test
At 60 mph, how much force can a loose 20-pound object exert in a sudden stop?
Over 1,000 pounds. A bag or toolbox on the back seat keeps moving when the car stops. It can hit someone as hard as a heavy weight. Iowa Driver's License Manual, p.35: “At 60 miles per hour, a 20-pound object has the potential to exert well over 1,000 pounds of force in a sudden stop.”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
- Free to start: a 10-question test and the first section of cards. No sign-up and no account.
- Paying opens the rest of the cards, unlimited full-length practice tests, and retests built from exactly the questions you got wrong.
- Every level up to Prepared — 3 tests passed in a row.
- Do the work, fail the real exam, and we refund you.
Where these come from
Every rule here is checked against Iowa Driver's License Manual, published by the Iowa Department of Transportation, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/IA.pdf (Iowa Driver's License Manual, edition M1170 07/23/2026, Iowa Department of Transportation, retrieved 2026-09-14; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/IA.pages.txt (the plain pdftotext fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- https://iowadot.gov/drivers-licenses-ids/driver-education/manuals-practice-tests/drivers-manual
- https://iowadot.gov/drivers-licenses-ids/driver-education/online-permit-test-skip-trip (read 2026-10-04; states no count or mark)
- https://iowadot.gov/drivers-licenses-ids/get-or-renew-drivers-licenses-ids-permits/under-18-permit-license-or-id/instruction-permit-under-age-18 (read 2026-10-04; states no count or mark)
- https://iowadot.gov/drivers-licenses-ids/driver-education/manuals-practice-tests/take-practice-test (read 2026-10-04; its 25 questions and 80% describe the practice test and are not used)
- https://www.legis.iowa.gov/docs/iac/chapter/761.604.pdf (IAC 10/1/25; 761-604.9(1): "will declare the minimum passing score for each test")
- docs/plans/iowa-exam-shape.md (every official source checked for the exam's shape, and what each gave)