Along with the moral responsibility, there is a legal duty in terms of First Aids according to our spanish Código Penal (art. 195). 
     
     1.- "El que no socorriere a una persona que se halle desamparaday en peligro manifiesto y grave, cuando pudiera hacerlo sin riesgo propio ni de terceros, será castigado..."


     That makes vey important that we have certain knowledge about basic proceedures in case of an accident.