The initiative, which includes slogans such as “travelling without having had breakfast affects all passengers”, comes after figures revealed that 46 passengers had fainted on trains during the first half of the year.

This resulted in a series of delays, as train drivers are obliged to stop the trains and seek immediate medical assistance for commuters.

According to the company which operates the rail link between Lisbon and Setúbal, all these cases were traced back to commuters not having eaten prior to boarding.