Edge lane lines — Tennessee Permit Test

Edge lane lines on the Tennessee permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.

The rules

A solid white line marks the right edge of the traffic lane; a solid or broken yellow line marks the left edge of lanes going your way.

Knowing which edge is which keeps you on your own side of the road at night, when the lines are all you can see.

A solid white line indicates the right edge of the traffic lane on a road.

Tennessee Comprehensive Driver License Manual, p.42

If you ever find yourself with yellow to your right and white to your left, you are going the wrong way.

On a divided road, driving the wrong way puts you head on with traffic at full speed. The line colors warn you first.

If you ever find yourself with yellow to your right and white to your left, you are going the wrong way.

Tennessee Comprehensive Driver License Manual, p.42

On a divided highway, the side of the road to the left of the driver and nearest the median always has a yellow line.

When you pull onto a divided road, the yellow line should be on your left. If it is not, you have the wrong side.

Remember, on a divided highway, the side of the roadway to the left of the driver and nearest the median always has a yellow line.

Tennessee Comprehensive Driver License Manual, p.42

On the test

Which line marks the right edge of the traffic lane?

A solid white line. Knowing which edge is which keeps you on your own side of the road at night, when the lines are all you can see. Tennessee Comprehensive Driver License Manual, p.42: “A solid white line indicates the right edge of the traffic lane on a road.”

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.

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Where these come from

Every rule here is checked against Tennessee Comprehensive Driver License Manual, published by the Tennessee Department of Safety and Homeland Security, and against the state code itself. Last checked 2026-10-03.