A pedestrian struck by a vehicle has no crumple zone, no airbag, no seatbelt, and no steel frame absorbing the impact energy before it reaches their body. The physics of pedestrian impact produces a specific and predictable injury sequence that differs from occupant injuries in vehicle-on-vehicle crashes, and understanding that sequence matters both medically and legally. Medically, because certain pedestrian injuries are systematically underdiagnosed in emergency settings focused on immediately life-threatening conditions. Legally, because the injury profile supports specific medical causation arguments that the defense insurer will challenge, and those challenges require specific clinical documentation to defeat.
Pedestrian accident claims also involve a driver duty of care framework that is broader than most people realize and a set of contributory or comparative fault arguments that insurers deploy reflexively regardless of how clearly the driver caused the crash. Understanding both the injury picture and the legal framework is the foundation for pursuing what a pedestrian accident claim is actually worth.
The Pedestrian Impact Injury Sequence
When a vehicle strikes a pedestrian, the body typically sustains injuries in a sequence determined by the vehicle’s speed, height, and the pedestrian’s position and age. The classic adult pedestrian impact sequence involves three distinct phases:
The primary impact occurs when the vehicle’s front end, usually the bumper and hood, strikes the pedestrian’s lower extremities. This phase produces tibial and fibular fractures, knee ligament injuries, and soft tissue damage to the legs. The height of the vehicle’s hood edge relative to the pedestrian’s center of gravity determines whether the pedestrian is thrown upward and over the vehicle or down and under it.
The secondary impact occurs when the pedestrian’s upper body contacts the hood, windshield, or A-pillar of the vehicle. This phase produces thoracic injuries, upper extremity fractures, and critically, traumatic brain injury from the head contacting the windshield or hood. The TBI produced at this stage is frequently a diffuse axonal injury rather than a focal contusion, which means standard CT imaging at the emergency department may appear normal while significant neurological damage exists.
The tertiary impact occurs when the pedestrian is thrown clear and contacts the road surface. This phase produces additional fractures, road rash, and secondary head injury from the ground impact. The cervical spine is particularly vulnerable at this stage when the head contacts the pavement.
Understanding this sequence is critical because it predicts where injuries will be found, helps explain injury patterns that might otherwise seem inconsistent with each other, and identifies body regions that should be evaluated even if they were not the focus of emergency treatment. A pedestrian who was treated for a leg fracture at the ER and discharged may have a concussion, thoracic injury, or cervical strain that was not identified during the acute care visit but that becomes symptomatic in the days following the crash.
The Driver’s Duty of Care to Pedestrians
Drivers owe pedestrians a specific and substantial duty of care that extends beyond simply obeying traffic signals. The legal duties most relevant to pedestrian accident claims include:
- Duty to yield at crosswalks: Drivers must yield to pedestrians who are lawfully in marked and unmarked crosswalks. This duty applies at signalized intersections when the pedestrian has the walk signal and at unsignalized crosswalks at intersections where the pedestrian has entered and is crossing
- Duty to exercise due care: Even when a pedestrian is not in a crosswalk, drivers have a duty to exercise due care to avoid striking them. This broader duty recognizes that pedestrians may be present in any location where foot traffic is reasonably foreseeable
- Duty to yield when turning: Drivers making right or left turns at intersections must yield to pedestrians who are crossing in the path of the turn, even when the driver has a green light for the turn itself
- Duty to account for vulnerable road users: In areas where children, elderly pedestrians, or disabled individuals are foreseeably present, the duty of care is heightened and requires additional attentiveness and reduced speed
How Insurers Attack Pedestrian Claims and What Counters Each Argument
Contributory or comparative fault arguments against pedestrians follow predictable patterns that experienced pedestrian accident attorneys anticipate and build against from the outset of the case:
- Crossing outside a crosswalk: The most common argument. The response is to document whether a crosswalk was available within a reasonable distance, whether the pedestrian’s crossing location was one where pedestrian presence was foreseeable to a reasonable driver, and whether the driver had adequate sight distance and time to stop regardless of the pedestrian’s crossing location
- Walking against a pedestrian signal: Requires verifying through traffic signal phase timing records whether the pedestrian actually entered against the signal, and if so, whether the driver had a subsequent opportunity to avoid the collision after the pedestrian entered the roadway
- Distraction by a device: The allegation that the pedestrian was looking at a phone requires positive evidence, and the insurer’s assertion alone is not proof. The pedestrian’s own phone records showing no active use at the time of the crash, and the absence of any witness account of distracted walking, counters this argument directly
The NHTSA’s pedestrian safety research documents the distribution of fault in fatal pedestrian crashes, consistently identifying driver failure to yield, speeding, and impairment as the leading contributing factors. This data provides the statistical foundation for any pedestrian accident claim that counters the reflexive insurer narrative of pedestrian fault.
