Why is it important to stop before passing a crosswalk with a vehicle stopped in front?

Stopping before passing a crosswalk where a vehicle is stopped in front is crucial because it allows the driver to check for pedestrians. When a vehicle is stopped at a crosswalk, it often indicates that there may be people crossing the street. By stopping and allowing for a clear view, the driver can ensure that no pedestrians are in the crosswalk or about to enter it, thus preventing accidents. This practice helps to promote safety for both the driver and pedestrians, ensuring that everyone adheres to traffic laws and maintains awareness of their surroundings while driving.