The agenda of the 4th meeting of Task Force 4 Frontal Impact & Restraint System Requirements includes a review of the progress dashboard, presentations of updated studies on abdominal injuries and rear row, continued discussion on priorities, and planning for a workshop in Japan.

GIDAS data analysis examined abdominal injuries in car crashes from 2005–2025. Case selection included passenger cars registered 2005–2025, occupants over 11 years old, belted, with at least AIS 1 in AIS15REG5. The study analyzed 234 cars with 248 occupants sustaining abdominal injuries. Frontal impacts accounted for 71%, rear impacts 12%, left side impacts 10%, and right side impacts 8% of cases. Analysis examined injury distribution across AIS levels, gender, age, height, weight, delta V, seating position, and specific abdominal injuries.

From 2006 to 2025, Swedish emergency hospitals treated 170,995 injured drivers and passengers in passenger cars (52% men, 48% women). Pelvic fractures occurred in 1,198 individuals (0.7%), with 78% having one fracture and 22% having multiple fractures. The proportion of pelvic fractures increased with age and when seat belts were not used. Drivers comprised 71% of injured, front passengers 14%, and rear passengers 8%.

This accidentology study analyzed French national accident data from 2015–2024 for M₁ vehicles involved in frontal collisions. Overall occupancy rate was 1.4 persons per vehicle, with rear rows accounting for 11% of occupants. Rear right seats were most occupied (46%), followed by rear left (40%) and rear centre (12%). Fatalities occurred in 96% of front row occupants versus 4% in rear rows. Rear row occupants showed consistently lower severity outcomes across all injury categories compared to front row occupants, with no significant differences observed before or after 2020.