Following a truck — Oklahoma Permit Test
Following a truck on the Oklahoma permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
When following a truck, stay far enough back so you can see the roadway ahead clearly.
Riding close behind a truck hides every hazard ahead of it until the truck swerves or brakes.
Stay far enough back so you can see the roadway ahead clearly.
If you are stopped behind a truck on an uphill grade, stay to the left in your lane so the driver can see you, and leave extra space in front in case the truck rolls back.
A heavy truck can roll back a little as it starts uphill, and a car right on its bumper gets hit.
If you’re stopped behind a truck on an uphill grade, stay to the left in your lane so the driver can see you.
Dim your lights at night behind a truck, because bright lights reflected in its mirrors can blind the driver.
A truck has big side mirrors, and your high beams bounce straight off them into the driver's eyes.
Bright lights reflected in the mirrors can blind the driver.
In rainy conditions, stay back from a truck, because spray and splash from its rear wheels can cover your windshield with water or mud.
A sudden sheet of muddy water can leave you driving blind right behind a heavy vehicle.
In rainy conditions, stay back.
On the test
How far back should you stay when following a truck?
Far enough to see the road ahead. Riding close behind a truck hides every hazard ahead of it until the truck swerves or brakes. Oklahoma Driver Manual, p.54: “Stay far enough back so you can see the roadway ahead clearly.”
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 Oklahoma Driver Manual, published by the Oklahoma Office of Management and Enterprise Services, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/OK.pdf (Oklahoma Driver Manual, Copyright 2025, Updated 11/24/25, Service Oklahoma, retrieved 2026-09-14 and re-checked 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/OK.pages.txt (the plain pdftotext fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/OK-exam.html (Service Oklahoma, Oklahoma Written Knowledge Test, https://oklahoma.gov/service/popular-services/written-test.html, read 2026-10-04; states both exam figures; sha256 pinned under examSource)
- https://oklahoma.gov/service/all-pages/driver-education.html (read 2026-10-04; links the manual)
- OAC 260:135-5-41 (Service Oklahoma's knowledge-test rule, read 2026-10-04 as reproduced at https://www.law.cornell.edu/regulations/oklahoma/OAC-260-135-5-41; a minimum of 20 questions and 75 percent to pass, corroborating the agency page)