Legislation
- Terrestrial Transport Regulation Act: Act no. 16/1987 of July 30th on Terrestrial Transport Regulation
- Regulation on the Terrestrial Transport Regulation Act: Royal Decree 1211/1990 of September 28th passing the Regulation on the Terrestrial Transport Regulation Act
- Ley de Transporte de Viajeros por Carretera: Ley 4/2004, de 18 de Marzo, de transporte de viajeros por carretra, publicada en el Boletín Oficial del Pais Vasco Nº 60, de 29 de Marzo de 2004.