What type of lines indicate that passing is not allowed in either direction, except for making a left turn?

Double solid yellow lines indicate that passing is not allowed in either direction, except for when a driver is making a left turn into or out of a driveway or alley. These lines are a clear and strong visual cue to drivers that passing is prohibited, thereby enhancing safety on the roads by preventing overtaking in areas where visibility may be limited or where it might otherwise be hazardous. The existence of these lines emphasizes the need for caution and adherence to traffic regulations, promoting safer travel for all road users.

In contrast, broken yellow lines signify that passing is allowed when it is safe to do so, and broken white lines indicate that lane changing is permitted. Therefore, the presence of double solid yellow lines serves a specific regulatory purpose, ensuring that drivers understand the restrictions on passing.