1. PROVINCIAL COUNCIL OF BIZKAIA (annual). Traffic monitoring at Biscay Road Network. Bilbao.
2. BI-637 Traffic Study “La Avanzada”;PROVINCIAL COUNCIL OF BIZKAIA,2012
3. Artxanda Tunnels Traffic Study;PROVINCIAL COUNCIL OF BIZKAIA,2009
4. Review of speed limits on the A-8 motorway within Bilbao Metropolitan Area;PROVINCIAL COUNCIL OF BIZKAIA,2009