Between 10 a.m. and 1 p.m. the buses will operate with minimum services due to the General Workers' Plenary, but until 9.15 a.m. journeys are guaranteed.
STCP - Sociedade de Transportes Colectivos do Porto has announced that services will be restricted on Friday morning, 28 June, due to the company's General Workers' Plenary.
Journeys departing up to 9.15am are guaranteed, but there may be disruption to buses and trams after that time.
Between 9.15am and 1.45pm there will be minimum services, corresponding to around 20% of planned journeys, on lines 200, 201, 204, 205, 207, 208, 305, 500, 502, 600, 602, 701, 702, 704, 801, 901/906, 903 and 907.
"STCP regrets the inconvenience that may result from this disruption to the service provided, appealing to its customers for their understanding," the company said in a statement, saying that from 1.45pm the service will gradually return to normal.