Sara A. Freed, PhD
Clinical Research Associate I

Dr. Sara A. Freed is a Clinical Research Associate at the Center for Injury Research and Prevention at Children’s Hospital of Philadelphia. As a researcher with a background in both older and younger drivers, she examines traffic safety across the lifespan.


Dr. Sara A. Freed joined the Center for Injury Research and Prevention as a Clinical Research Associate in 2023. She works primarily on research projects using data from the New Jersey Safety and Health Outcomes (NJ-SHO) Data Warehouse. She also engages with community stakeholders to promote the dissemination of these data to inform traffic safety research and projects in New Jersey and other interested states.

Prior to joining CIRP, Sara worked for a small business conducting traffic safety research projects funded by the National Highway Traffic Safety Administration. During this time, she worked on a variety of lifespan traffic safety projects including a systematic review of older driver safety research published from 2000 to 2021 and an experimental study to promote seat belt use among part-time users.

Dr. Freed combines her graduate training in older driver research with years of experience researching safety behavior and trends among drivers of all ages to provide a lifespan approach to the study of traffic safety.


BS, The Pennsylvania State University (Human Development and Family Studies), 2013

MS, The Pennsylvania State University (Human Development and Family Studies), 2018

PhD, The Pennsylvania State University (Human Development and Family Studies), 2021

Clinical Research Associate, Center for Injury Research and Prevention

Member, Transportation Research Board

Member, The Gerontological Society of America

Dwight D. Eisenhower Transportation Fellow

Freed SA, Ross LA, Mogle J, Gamaldo AA,Zhang, Y. (2023). Driver License Renewal Requirements Predict Driving Mobility Among Older Drivers With Health-Related Travel Difficulties. Transportation Research Record.

Freed SA, Ross LA, Gamaldo AA, Stavrinos D.(2021). Use of Multilevel Modeling to Examine Variability of Distracted Driving Behavior in Naturalistic Driving Studies. Accident Analysis and Prevention, 152.doi:10.1016/j.aap.2021.105986.

Freed SA, Sprague BN, Ross LA. (2022). Does the Association Between Objective and Subjective Memory Vary By Age Among Healthy Older Adults? Aging, Neuropsychology, and Cognition.

Phillips CB, Freed SA, Ross, LA.(2019). Older Adult Lifespace Varies By Driving Status and Residential Population Density. Transportation Research Record, 2673(7), 586–595.

Contact Information
(717) 609-6107
Roberts Center for Pediatric Research, 2716 South Street, Philadelphia, PA 19146