Lane lines — Wisconsin Permit Test

Lane lines on the Wisconsin permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.

The rules

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

The white edge tells you where the road runs out. Drifting over it in the dark finds the gravel.

Edge and Lane Lines – A solid white line indicates the right edge of the traffic lane.
Wisconsin Motorists' Handbook, p.34

A solid or dashed yellow line indicates the left edge of the traffic lanes going in your direction.

Yellow always means the far side of your half of the road. Past it, the traffic is coming at you.

A solid or dashed yellow line indicates the left edge of the traffic lanes going in your direction.
Wisconsin Motorists' Handbook, p.34

A white dashed line divides lanes of traffic going in the same direction and may be crossed when it is safe.

Traffic beside a dashed white line is going your way. Crossing it is a lane change, not an overtake.

These divide lanes of traffic going in the same direction. You can cross this line when it is safe.
Wisconsin Motorists' Handbook, p.34

A solid white line between lanes may not be crossed except for a hazard or a turn within the next block.

The solid line is painted where merging is a bad idea. The exceptions are for getting out of trouble, not for making time.

A solid white line between lanes means you cannot cross. You can only cross if there is a hazard or you are turning within the next block.
Wisconsin Motorists' Handbook, p.34

Line colors tell a driver whether the roadway is one-way or two-way.

One glance at the color says whether anything can come at you. It is the fastest check on an unfamiliar road.

Line colors tell you if you are on a one-way or two-way roadway.
Wisconsin Motorists' Handbook, p.34

On the test

What does a solid white edge line mark in Wisconsin?

The right edge of the lane. The white edge tells you where the road runs out. Drifting over it in the dark finds the gravel. Wisconsin Motorists' Handbook, p.34: “Edge and Lane Lines – A solid white line indicates the right edge of the traffic lane.”

How this works

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Where these come from

Every rule here is checked against Wisconsin Motorists' Handbook, published by the Wisconsin Department of Transportation, and against the state code itself. Last checked 2026-09-15.