Signs by description — Maryland Permit Test
Signs by description on the Maryland permit test — 16 rules, each with the reason behind it and a question on it while it is fresh.
The rules
An eight-sided (octagon) sign is used for one message: stop.
The shape carries the order on its own, so a driver reads it from behind, in fog or at night, before a word on it can be made out.
A downward-pointing triangle is the shape of a yield sign: slow down and, if necessary, stop to give the right-of-way.
The point faces the ground the way the sign faces you when you must yield, and no other sign borrows the shape.
The pennant is the one sideways-pointing shape on the road, and it marks the start of a no-passing zone.
It stands on the left, where a driver looking to pass is already looking, and its shape says the sight line is about to run out.
A five-sided (pentagon) sign warns of a school zone ahead or marks a school crossing.
Children step into the road where a driver least expects it, so the shape is kept for that one warning and nothing else.
A round sign is used to warn that a railroad crossing is ahead.
Trains cannot stop for you, so the warning comes as a shape you can read at speed, well before the tracks.
A diamond-shaped sign warns of special conditions or hazards ahead, so the driver may have to slow down.
The road is about to do something you cannot yet see, and the warning buys the time to be ready for it.
A crossbuck, two boards crossed in an X, identifies the location of a highway-rail grade crossing.
The round sign says a crossing is coming; the crossbuck stands where the tracks actually are, so it is the last word before them.
Red on a sign means stop, yield, do not enter, or wrong way.
In fog you often see the color of a sign long before you can read it, so the color has to carry the message on its own.
Yellow on a sign is a general warning of what to expect ahead.
Warning colors buy you time, and the time is only useful if you slow while the hazard is still ahead of you.
White on a sign is used for speed limit, keep right and some guide signs.
Plain black on white marks the signs that state a rule you can be ticketed for, so the look itself says obey rather than beware.
Orange on a sign warns of a construction or maintenance work area.
Orange is kept for temporary conditions, so it tells you the hazard is people and equipment rather than the road itself.
Green on a sign gives destinations, distances and directions.
Green is for navigation, which is information you can read at a glance and act on a mile later.
Blue on a sign points to services such as food, gas and rest areas.
Blue answers the question a tired driver is asking, where to stop, without competing with the green that says where to go.
Brown on a sign points to recreation and cultural interest areas.
Brown is for the places you might choose to visit, kept apart from the blue that marks what you might need on the way.
Fluorescent yellow-green on a sign marks school, pedestrian and bicycle signs.
The eye picks that color out faster than plain yellow, and the places it marks are where people are in the road.
Fluorescent pink on a sign marks an emergency traffic incident.
A crash scene is not a planned work zone, so it gets a color of its own that says the hazard is sudden and the lanes may have just changed.
On the test
Which shape of sign is used for stop signs and for nothing else?
An eight-sided octagon. The shape carries the order on its own, so a driver reads it from behind, in fog or at night, before a word on it can be made out.
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.
Where these come from
Every rule here is checked against Maryland Driver's Manual, published by the Maryland Department of Transportation Motor Vehicle Administration, and against the state code itself. Last checked 2026-08-29.
- https://mva.maryland.gov/licenses-ids/prepare-drivers-license-test/knowledge-tests
- https://mva.maryland.gov/your-mva-guide/teens-new-drivers/learners-permit
- https://mva.maryland.gov/drivers/Pages/rookie-driver-general-learners.aspx
- https://mva.maryland.gov/licenses-ids/driver-education-safety/maryland-drivers-manuals
- https://mva.maryland.gov/media/148/download?inline=
- https://mva.maryland.gov/your-mva-guide/drivers-revoked-or-suspended-licenses/driving-under-influence-dui
- https://law.justia.com/codes/maryland/transportation/title-21/subtitle-8/section-21-801-1/
- https://law.justia.com/codes/maryland/transportation/title-22/subtitle-4/section-22-412-3/
- https://law.justia.com/codes/maryland/2013/article-gtr/section-21-706
- https://news.maryland.gov/msp/2023/08/24/stop-for-school-buses-what-are-the-laws-in-maryland/
- https://zerodeathsmd.gov/news/maryland-school-bus-laws-and-safety-tips/
- https://legalclarity.org/maryland-inspection-requirements-for-vehicles-what-to-know/
- https://law.justia.com/codes/maryland/transportation/title-22/subtitle-2/
- https://law.justia.com/codes/maryland/transportation/title-22/subtitle-2/section-22-206