Montana Permit Practice Test

When you encounter a double solid yellow line dividing opposite lanes of traffic, it indicates that you cannot cross the lines for passing or other maneuvers except under specific circumstances. The correct action is to cross over the lines to make a left turn from or into a side street or driveway. This is allowed because the double solid yellow lines primarily prohibit passing but do not restrict turning when necessary. In this scenario, crossing the lines to enter a side street or driveway is permissible and is a common situation where drivers need to perform such maneuvers. The intention of the double solid yellow lines is to prevent dangerous passing situations, particularly where visibility is limited, yet they recognize the need for turning actions in urban and suburban environments. Other actions, such as driving straight without any restrictions or making a U-turn wherever needed, would violate the purpose of the double solid yellow lines, as they are designed to regulate vehicle movement for safety. Similarly, crossing the lines to pass another vehicle is prohibited, as this can lead to hazardous situations on the roadway.