What factor increases the potential for injury during a crash involving tall vehicles?

The height of the bumpers on tall vehicles significantly increases the potential for injury during a crash. This is primarily because higher bumpers can collide with vulnerable parts of smaller vehicles, especially during a collision. Standard passenger vehicles are designed with bumpers that align with the height of the majority of vehicles on the road. When a tall vehicle has elevated bumpers, the force of impact may connect with the passenger compartment of a smaller vehicle, rather than absorbing energy through the intended protection zones. This can lead to more severe injuries for occupants of smaller vehicles, as the design factors intended for protection may not function as required, escalating the risk of injury in the event of an accident. Factors such as the vehicle's weight, color, or tire brand do not have the same direct impact on injury potential during crashes involving height discrepancies.