What is the initial action to take when facing an unexpected pedestrian crossing while in an intersection?

When faced with an unexpected pedestrian crossing in an intersection, the safest and most appropriate action is to immediately stop your vehicle. This action prioritizes the safety of the pedestrian, who has the right of way in many situations. By stopping, you ensure that you do not endanger the pedestrian's safety while attempting to navigate the intersection.

Honk your horn may alert others, but it does not actively prevent an accident or help the pedestrian cross safely. Accelerating to avoid them would pose a significant risk, as it could lead to serious consequences for both the pedestrian and the driver. Similarly, turning into another lane may not be a safe option if there are other vehicles or obstacles in the way, and it does not provide a clear resolution to the situation.

Thus, stopping your vehicle is the best and most responsible response when an unexpected pedestrian crosses in an intersection.