Following distance — Texas Permit Test
Following distance on the Texas permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.
The rules
At speeds of 30 mph or less the minimum following time is 2 seconds in good road conditions.
Distance in feet changes with speed but time does not. Counting seconds works at any speed.
For speeds 30 mph or less, the minimum time between your car and the one in front of you is 2 seconds with good road conditions
Above 30 mph a driver keeps a 4 second gap between cars in good road conditions.
At higher speed the car covers more ground before the brakes even bite. The gap has to grow with it.
For speeds above 30 mph, maintain a 4 second gap between cars during good road conditions
A four-second following interval is the best practice for a beginning or less experienced driver.
A new driver takes longer to see a problem and longer to act on it. The extra second is where that time comes from.
Using a four-second following interval is the best practice for a beginning or less experienced driver
In poor road conditions a driver should allow more time than the usual following interval.
Wet or loose surfaces stretch the stopping distance without changing anything a driver can see. The extra time covers it.
During periods of poor road conditions, allow more time
The faster a driver goes, the greater the distance they should keep from the car ahead.
It is a relationship, not a fixed number of car lengths. Every increase in speed needs more room.
practices below: 1. You should keep a safe distance between your car and the one in front of you. The faster you drive, the greater the distance you should keep from the car ahead of you
It takes the average person 1-1/2 seconds to think, react, and apply the brakes.
Nothing about the car is moving during that time and the car is not slowing at all. It is pure distance added to every stop.
It takes the average person 1-1/2 seconds to think, react and apply the brakes
On the test
What is the minimum following time at 30 mph or less in Texas?
2 seconds. Distance in feet changes with speed but time does not. Counting seconds works at any speed. Texas Driver Handbook, p.45: “For speeds 30 mph or less, the minimum time between your car and the one in front of you is 2 seconds with good road conditions”
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 Texas Driver Handbook, published by the Texas Department of Public Safety, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/TX.pdf (Texas Driver Handbook, form DL-7, Revised January 2026, Texas Department of Public Safety, retrieved 2026-09-14 from dps.texas.gov)
- src/assets/drivers-manuals/TX.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 6, nonLawPages, the four extraction traps and the extraction flag, each with its measured basis)
- docs/plans/texas-exam-shape.md (the search that established that no official source states the question count, and the two decoys it disposes of)