Which lines separate lanes of traffic going in the same direction and allow lane changes with caution?

Broken white lines are used to separate lanes of traffic that are going in the same direction. They indicate that lane changes can be made, provided that it is safe to do so. The presence of broken lines signifies that drivers are permitted to shift lanes, but they must exercise caution, checking for other vehicles before making a change.

In contrast, double solid yellow lines indicate that passing is not allowed in either direction, while solid yellow lines typically separate oncoming traffic lanes and also prohibit passing. Solid white lines, on the other hand, indicate that lane changes are discouraged, often found on the right side of the road to indicate that crossing over might not be safe. Therefore, broken white lines are the correct designation for lanes where driver maneuverability is permitted with attentiveness.