What is a limitation of step vans (delivery trucks) and 15-passenger vans?

The limitation of step vans and 15-passenger vans related to visibility is particularly significant because their design features can obstruct the driver's view of the area directly behind the vehicle. Due to their height, body shape, and the position of the rear windows, these vehicles often create blind spots that make it challenging for drivers to see smaller vehicles, pedestrians, or objects behind them when reversing. This lack of rear visibility can increase the risk of accidents, especially in crowded or urban environments where maneuvering in tight spaces is common.

Addressing the other options helps illustrate why this limitation stands out. While these vehicles may indeed be slow to accelerate or difficult to park, those issues are more about handling and performance under specific conditions rather than a fundamental design flaw related to safety. Similarly, the risk of tipping over is more associated with the load they carry and their design compared to the visibility challenges they pose. Therefore, the issue of rear visibility is a crucial safety concern for drivers of these larger vehicles, making it a significant limitation.