What does a broken white line on the road indicate?

A broken white line on the road indicates that drivers are allowed to change lanes, provided it is safe to do so. This marking serves as a guideline for lane management, signaling that the lanes are meant for similar directions of travel and that lane changes are permissible. It is important for drivers to check their mirrors and ensure that the lane they are moving into is clear before making the maneuver, as safety is always the priority.

The other options do not accurately represent the meaning of a broken white line. For instance, a solid line would prevent lane changes, and stopping is not associated with broken lines. The notion of passing cars only to the right does not pertain directly to the meaning of the broken line itself. Thus, the correct interpretation reinforces safe lane changes when conditions allow.