What procedure can help prevent unloading obstacles at bus stops with multiple children?

The correct procedure to help prevent unloading obstacles at bus stops with multiple children is for the driver to count the students as they disembark before moving the bus. This approach ensures that all students are accounted for and safely off the bus before the driver proceeds. By counting the children, the driver can ensure no one is left behind or in a position where they could be in harm's way, thus minimizing confusion and potential safety hazards.

Counting also serves as a method to verify that all children are safely out of the way of the bus and the surrounding area is clear. In situations with multiple children unloading, this step is crucial for effectively managing the flow of students and maintaining a safe environment at bus stops.

Other procedures might have their own merits, but none directly address the importance of accountability and safety as effectively as counting the students as they disembark. For instance, having students cross the street in groups, instructing them to board quietly, or checking for traffic, while important for safety and order, do not specifically focus on ensuring every child has safely cleared the unloading area before the driver takes further action.