You must have a valid ticket to travel on collective passenger transport systems (Law No. 28/2006, of 4 July, republished by Decree-Law 117/2017, of 12 September).
If you don't have a valid ticket, you will be committing a minor or a serious infringement:
Minor Infringement | a fine of between €30 and €87.50.
Serious Infringement | a fine of between €120 and €350.
A minor infringement consists of not validating tickets when this is required, with regard to:
- Passes and tickets not validated using the validation machine;
- Occasional tickets not validated after the second boarding on the same journey;
- Use of a damaged ticket that cannot be identified or validated (with proof it has been loaded). In this case, the card is kept by the inspectors.