Following distance — Oklahoma Permit Test
Following distance on the Oklahoma permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.
The rules
You should always give yourself a cushion of safety: open space in front, behind and on the sides.
Open space around you is room to steer or stop when someone else makes a mistake.
You should always give yourself a “cushion of safety,” having open space in front, behind and on the sides.
To avoid following too closely, allow one car length for every 10 miles per hour of speed, or use the three-second rule.
The faster you go, the more road you need to stop, so the gap has to grow with your speed.
Allow one car length for every 10 miles per hour of speed OR
Under the three-second rule, once the car ahead passes a fixed object you should be able to count 3 seconds before you pass it.
Three seconds gives you time to see the car ahead brake, react, and stop before you reach it.
Once the car has passed the object, you should be able to count, “One thousand one, one thousand two, one thousand three,” before you pass the fixed object.
In bad weather or poor road conditions, increase your following count to four seconds.
Wet or icy roads make every stop longer, so the gap behind the car ahead has to be longer too.
In bad weather or poor road conditions, increase your count to four seconds (one thousand four).
For the three-second rule, select a fixed object, such as a tree, roadside sign or utility pole, ahead of the car in front of you.
A fixed object gives you a mark on the road so you can measure the gap instead of guessing it.
Select a fixed object, such as a tree, roadside sign or utility pole, ahead of the car in front of you.
When cars bunch up and travel in a pack, it's much safer to avoid the pack when you can and keep your cushion of safety.
In a pack one sudden stop can set off a chain of crashes with no room for anyone to escape.
It’s much safer to avoid the pack when you can and maintain your cushion of safety.
On the test
What is the cushion of safety the manual says to give yourself?
Open space in front, behind and on the sides. Open space around you is room to steer or stop when someone else makes a mistake. Oklahoma Driver Manual, p.44: “You should always give yourself a “cushion of safety,” having open space in front, behind and on the sides.”
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)