When is it illegal to change lanes?

Changing lanes is illegal when there is a solid line marking and when it is unsafe. The presence of a solid line indicates that lane changing is prohibited in that area to ensure the safety of all road users. Solid lines are used in situations where visibility may be reduced, where there are navigational hazards, or where traffic patterns require vehicles to remain in their lane.

Additionally, lane changing is also considered illegal when it is unsafe, which means it can cause hazards not only to the driver attempting to change lanes but also to other drivers and pedestrians. Factors like inadequate space, approaching vehicles, or poor road conditions contribute to the unsafe nature of a lane change.

The other scenarios outlined do not encapsulate the broader legal prohibitions against lane changing, thus reinforcing the importance of only changing lanes when it is both permissible according to line markings and safe for you and others on the road.