How Well Can a Snake Cross the Road? (IMAGE) Drexel University Caption Northern pine snakes move much more efficiently across sand than across concrete and asphalt surfaces, according to research from the Laboratory of Pinelands Research at Drexel University. Doctoral student Dane C. Ward is combining substrate experiments with landscape-level analyses to determine the impacts of roads on snake habitat. Credit Dane Ward Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.