When is it legal to change lanes?

Answer: B — Only when it is safe and legal to do so

Changing lanes is legal only when it is safe and legal to do so. This means that a driver must ensure that the lane they wish to move into is clear and that they can do so without causing a hazard to themselves or other road users. Additionally, there may be specific traffic laws governing lane changes in certain areas, such as no lane change signs or specific rules in certain zones. Being aware of your surroundings, checking mirrors, signaling your intention, and making sure to look for any obstacles or vehicles in the blind spots are all essential components of making a safe lane change. This practice is crucial for maintaining safety and order on the roads, as haphazard lane changes can lead to collisions or traffic disruptions.