<div dir="ltr">En inglés, sacado de WeeklyOSM, muy interesante: <a href="http://k1z.blog.uni-heidelberg.de/2018/05/08/routing-for-accessibility-new-project-with-city-of-heidelberg/">http://k1z.blog.uni-heidelberg.de/2018/05/08/routing-for-accessibility-new-project-with-city-of-heidelberg/</a><br></div>