Traffic signal lights — Mississippi Permit Test
Traffic signal lights on the Mississippi permit test — 9 rules, each with the reason behind it and a question on it while it is fresh.
The rules
A solid red light means you must make a complete stop and remain stopped until the light turns green.
Cross traffic has a green light and will not slow down for a car that creeps out.
A SOLID RED LIGHT means you must make a complete stop and remain stopped until the light turns green.
You may turn right on a red light unless a sign prohibits it, but you must first stop completely and yield to other traffic and pedestrians; only yielding before turning is not enough and is illegal.
A rolling right turn on red is how drivers hit people stepping off the curb to their right.
You may turn right while the light is red. But first, you must STOP COMPLETELY and yield to other traffic and pedestrians.
A solid yellow light means the light will soon turn red; slow down and prepare to stop.
Speeding up to beat the yellow is how drivers end up in the middle as cross traffic starts.
A SOLID YELLOW LIGHT means the light will soon turn red. Slow down and prepare to stop.
A solid green light means you may go if it is safe, but you must yield to any pedestrians and any traffic already in the intersection.
A green light does not clear the cars and people who were still crossing when it changed.
A SOLID GREEN LIGHT means you may go if it is safe to do so. You must yield to any pedestrians and to any traffic already in the intersection.
If you are turning left on a solid green light, you must yield to oncoming traffic.
Oncoming cars have the same green and will not stop for a car that turns across them.
If you are turning left, the solid green light means you must YIELD TO ONCOMING TRAFFIC.
A green arrow means you may turn in its direction from the proper lane; oncoming traffic has a red light, so you have a protected turn.
Knowing which signal protects your turn tells you when you can turn without waiting for a gap.
Oncoming traffic will have a red light when your turn arrow is green, giving you a protected turn.
A flashing yellow arrow means you may turn in its direction, but you must yield to oncoming traffic, which has a green light; your turn is not protected.
Oncoming cars still have a green light, so turning without a gap puts you in their path.
A YELLOW FLASHING ARROW means you may turn in the direction of the arrow if you are in the proper lane. You must YIELD TO ONCOMING TRAFFIC.
A solid yellow arrow is the same as a solid yellow light: the light is about to change to red.
Treating a yellow arrow as a go signal leaves you turning as the red comes on.
A YELLOW SOLID ARROW is the same as a SOLID YELLOW LIGHT. It indicates that the light is about to change to red.
On a left-turn signal, a yellow arrow means the signal is changing from a green arrow (a protected turn) to an unprotected turn or to a red light.
If you think the turn is still protected, you may turn in front of cars that now have a green.
The signal is transitioning from a green arrow (protected turn) to an unprotected turn or to a red light.
On the test
What must you do at a solid red light?
Stop and stay stopped until green. Cross traffic has a green light and will not slow down for a car that creeps out. Mississippi Driver's License Manual, p.37: “A SOLID RED LIGHT means you must make a complete stop and remain stopped until the light turns green.”
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 Mississippi Driver's License Manual, published by the Mississippi Department of Public Safety, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/MS.pdf (Mississippi Driver's License Manual, Revised December 2024, Mississippi Department of Public Safety, Driver Service Bureau, retrieved 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/MS.pages.txt (the plain pdftotext fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/MS-exam.html (31 Miss. Code. R. 1-2.3 as reproduced by the Legal Information Institute, retrieved 2026-10-04; sha256 pinned in SOURCES.json under examSource)
- https://www.driverservicebureau.dps.ms.gov/Drivers/Learners_Permit (read 2026-10-04; links the manual, states no count or mark)
- https://www.sos.ms.gov/adminsearch/ACCode/00000383c.pdf (Title 31 Part 1, Driver Services Administrative Code; Rule 2.3 item 9: "A grade of 80% will be required on any and all tests issued for a Temporary Permit.")
- https://www.sos.ms.gov/adminsearch/ACProposed/00013644b.pdf (the 2006 filing whose "30 question" sentence the 2013 and 2014 re-filings struck; not used)