Measure where the person was visible, where the driver looked, and what the road demanded.

Document the pedestrian's origin, route, pace, direction, clothing, carried objects, companions, and position at contact. Map the vehicle's lane, maneuver, speed, signals, headlights, windshield and mirror view, and intended destination. Crosswalk markings, curb ramps, medians, parking, bus stops, driveways, shoulder, sidewalk gaps, construction, vegetation, signs, utility equipment, grade, and curvature can change the sight picture. Night photographs should be taken under comparable lighting rather than relying only on daytime inspection.

Turning collisions require special attention to competing checks. A driver may look left for traffic while a pedestrian approaches from the right, or focus on a gap while entering a crosswalk. A-pillar, mirror, parked vehicle, or another turning car may briefly screen the person. The reconstruction should determine whether the obstruction moved, how long the pedestrian was exposed, and whether a second look would have revealed the conflict.

Midblock and roadside events present different facts. Determine why the person was in the roadway, whether a vehicle stopped or obscured the view, the distance to an intersection, traffic volume, lighting, shoulder, transit stop, disabled vehicle, work zone, or emergency. A person outside a marked crosswalk may face a comparative argument, but the driver's speed, attention, lookout, and opportunity to avoid still need evidence and legal analysis.

Potential visual sources include businesses, residences, buses, parking facilities, traffic systems, doorbells, dash cameras, body cameras, and phones. Record each device's owner, position, view, clock, recording function, export, and retention. Request enough time before and after the event to capture the approaches and response. A clip copied through social media may omit frames or metadata, so the original custodian and native file should be pursued.

Vehicle sources may include event data, braking or driver-assistance alerts, infotainment, dash video, headlamp condition, windshield condition, mirror settings, and post-impact damage. Part 563 does not make every vehicle a recorder or every data field available. The vehicle should be preserved long enough to assess inspection needs, while ownership, repair, storage, and non-destructive or destructive protocols are handled fairly.

Roadway sources can include signal timing, pedestrian phases, accessible signals, crossing design, lighting plans, work orders, complaints, maintenance, permits, traffic studies, prior events, and construction records. The relevant custodian may be a city, county, Oklahoma Department of Transportation, turnpike authority, campus, tribal government, utility, or contractor. Coordinates, boundary, asset ownership, and maintenance control should be established before a records request or public-entity theory is framed.

The applicable law depends on the signal, crosswalk, intersection, midblock, sidewalk, road edge, backing vehicle, school area, work zone, or emergency. Confirm controls for driver and pedestrian. Even with a violation, civil effect depends on duty, causation, comparative fault, and what the other person could perceive and avoid.

Speed affects stopping distance and injury energy. Estimate it from reliable physical, electronic, or video evidence, not adjectives. Determine when the pedestrian became visible and how speed affected braking or steering. Test a sudden-appearance account against sight lines, lighting, path, attention, and vehicle response.

A roadway, signal, lighting, or stop-design theory requires a defined condition and responsible party. The analysis must examine control, notice, maintenance, design or discretionary issues, contractor roles, immunity or exemption, Governmental Tort Claims Act procedure, and causal relation. The existence of prior crashes or a safety program may support investigation, but it does not establish notice of the same condition or liability.

The mechanism may include primary contact with the bumper, hood, windshield, mirror, side, or wheel; projection; and secondary ground or object contact. Vehicle damage, clothing, shoes, carried items, road marks, and medical findings can help establish sequence. Head, spine, pelvis, limb, internal, skin, and psychological injuries should be documented through emergency care, imaging, surgery, rehabilitation, restrictions, symptoms, and qualified opinions.

Function before and after matters. Walking tolerance, transportation independence, work, caregiving, school, household activity, recreation, sleep, cognition, scarring, prosthetic needs, and home modification may need records. Future-care projections require medical foundation and realistic frequency and cost assumptions. Family observations provide texture but should be supported where professional assessment is needed.

Coverage may include driver, owner, employer or commercial, rideshare or delivery, umbrella, and household uninsured or underinsured motorist policies. Oklahoma definitions may extend beyond occupants, but insured status and facts require proof. Health, medical-payments, disability, workers' compensation, public benefits, liens, and subrogation may affect distribution.