Returning after passing a truck — Delaware Permit Test
Returning after passing a truck on the Delaware permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
If a truck driver blinks the lights after you pass, it is a signal that it is clear to pull back in.
A driver who misreads the flash may brake or swerve when the truck driver was only saying the way is clear.
If the driver blinks his lights after you pass, it’s a signal that it is clear to pull back in.
Before pulling in front of a truck you have passed, be sure you can see the cab of the truck in your rear-view mirror.
Cars that cut in too soon and then slow leave a truck driver no room to stop.
Because it takes longer to pass a large vehicle, you should maintain a consistent speed when passing, and be sure you can see the cab of the truck in your rear-view mirror before pulling in front.
After you pass a truck, maintain your speed.
A car that slows right after cutting in front of a heavy truck can be hit from behind.
After you pass a truck, maintain your speed.
On the test
After you pass a truck, its driver blinks the lights. What does that mean?
It is clear to pull back in. A driver who misreads the flash may brake or swerve when the truck driver was only saying the way is clear. Delaware Driver Manual, p.103: “If the driver blinks his lights after you pass, it’s a signal that it is clear to pull back in.”
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
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Where these come from
Every rule here is checked against Delaware Driver Manual, published by the Delaware Division of Motor Vehicles, and against the state code itself. Last checked 2026-10-05.
- src/assets/drivers-manuals/DE.pdf (Delaware Driver Manual, July 2026, Delaware Division of Motor Vehicles, retrieved 2026-09-14; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/DE.pages.txt (scripts/de-text.sh: plain pdftotext cropped to keep the section tab out, physical 47 under -layout; the fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/DE-exam.html (Delaware Division of Motor Vehicles, Driver's License Exam, https://dmv.de.gov/DriverServices/drivers_license/index.shtml?dc=dr_lic_written, read 2026-10-05; states both exam figures; sha256 pinned under examSource)
- https://dmv.de.gov/menu/forms_manuals.shtml (read 2026-10-05; links the manual)
- https://dmv.de.gov/DriverServices/faqs/index.shtml?dc=dr_faq_general (read 2026-10-05; its 30 and 24 are the exam page's figures before 2024-12, per the Internet Archive)