Optimal tracks (IMAGE) CNRS Caption In blue: optimal track determined by this new model. In pink: the standard track with a shortened straight line. In black: the classic standard track. Credit Amandine Aftalion, CNRS researcher at the Centre d'analyse et de mathématique sociales (CNRS/EHESS) and Emmanuel Trélat, Sorbonne Université researcher at the Laboratoire Jacques-Louis Lions (CNRS/Sorbonne Université/ Université de Paris) 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.