When is it acceptable to cross a double yellow line?

Crossing a double yellow line is permissible in specific circumstances, particularly when making a left turn into or out of a driveway or private road. This rule exists because double yellow lines are meant to indicate no-passing zones, primarily to enhance safety by preventing overtaking in areas where visibility may be limited or where it is unsafe to do so.

When you are turning left into or out of a private road or driveway, it becomes necessary to cross the double yellow line to safely execute that maneuver. This exception is designed to facilitate access to and from properties while still maintaining the intent of the road markings to discourage passing in hazardous situations.

In contrast, the other options present scenarios that do not align with traffic regulations governing double yellow lines. For example, passing another vehicle, regardless of circumstances, is illegal when double yellow lines are present since it compromises safety. The notion of only allowing such actions during daylight hours does not hold under traffic law, as crossing the lines is not restricted by time of day. Finally, maneuvering to avoid an obstacle is typically addressed using related rules and may require other driving actions without disregarding the double yellow markings.