With increased possibilities of advanced and autonomous driver assistance systems, future vehicle occupants may begin to engage in a wider range of activities and assume a larger range of postures, including reclined vehicle seatback orientations. However, no study has yet evaluated the influence of reclined vehicle scenarios on the static posture and belt fit for children. The broad objective of this project is to create a robust dataset of posture and belt fit metrics of children in reclined vehicle seating configurations through evaluation of children ages 4-12 with and without a booster seat. Pediatric ATDs will also be evaluated in each condition.