Which of the following factors affects the procedures for curbing a bus?

The amount of space influences the procedures for curbing a bus because it directly impacts how safely and effectively the bus can come to a stop at its designated curbside location. Adequate space allows drivers to maneuver the bus comfortably without impeding traffic or risking accidents.

When there's limited space, drivers may need to adjust their approach speed and angle to ensure they can safely maneuver the bus to the curb. Insufficient space could also lead to issues with passenger boarding and alighting, as well as creating hazards for other vehicles or pedestrians. Therefore, the technical procedures involved in curbing, such as the angle of approach, speed, and positioning, all rely heavily on how much space is available at the stop.

Weather conditions, duration of the stop, and passenger count do play roles in overall bus operation and stopping procedures, but they do not directly dictate how a bus should be curbed as much as the physical space available for the maneuver.