Centerline markings — Montana Permit Test

A broken yellow centerline may be crossed to pass, if it is safe; do not cross the centerline unless passing.

A driver who treats a broken line as a lane to drift in can wander into oncoming cars.

A broken yellow line as the centerline may be crossed.

Where a solid and a dashed yellow line divide opposing traffic, you may not pass if the solid line is on your side.

The solid line is on your side because you cannot see far enough ahead to pass safely.

Where there is both a solid and a dashed yellow line between opposing lanes of traffic, you may not pass if the solid yellow line is on your side.

A double solid yellow line may not be crossed to pass by traffic moving in either direction.

Double lines mark places where a pass from either side could end in a head-on crash.

A double yellow line may not be crossed by traffic moving in either direction.

You may cross a solid yellow centerline only to turn left into a parking lot, private driveway or road, if it is safe.

Without this allowance no one could reach a driveway on the far side of a no-passing stretch.

Crossing a solid centerline is permitted only as part of a left turn maneuver.

When may you cross a broken yellow centerline?

To pass, when it is safe. A driver who treats a broken line as a lane to drift in can wander into oncoming cars. Montana Driver Manual, p.34: “A broken yellow line as the centerline may be crossed.”