 In 1936 by Decree 1715 the Highway Police or "Policia Vial" is established to watch over railways, Aerial tramways, watercrafts, highways and streets with the main function of enforcing transit, transportation and motorvehicle laws.On October 25, by Decree 2816 of 1955 the National Police designs and implements the "Unidades de Intervención y Reacción" or Intervention and Reaction Units (UNIR), a strategy focused on combating terrorism and delinquency on highways.On January 19, 1999, the organizational structure is defined and put under the management of the Operative Directorate of the National Police.