What do double solid lines on the road indicate?

Double solid lines on the road indicate that no crossing or passing is permitted. This means that vehicles should not maneuver across these lines to overtake another vehicle or change lanes. The purpose of double solid lines is to enhance safety by clearly marking areas where it’s dangerous to exceed the lane, typically due to visibility issues or upcoming hazards like curves or intersections. It is essential for drivers to follow these markings to prevent accidents and maintain orderly traffic flow. Obeying these lines helps ensure both the driver's safety and that of other road users.