Applicable legislation

Organic Law No. 13/2006 of April 17th - Legislative Diploma on Public Transport of Children.
 http://dre.pt/pdfgratis/2006/04/075A00.pdf

Decree No. 225/2008 of December 23rd – Up-to-date tariff system applicable to regular routes for long distance public transport in the year 2009.
 http://gov-madeira.pt/joram/1serie/2008/iserie-158-2008-12-23.pdf