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 | Almost faded away (1975-1996)In the second half of the seventies the decline was
            continued. First the lines to the north (6, 7 & 8) were
            closed. Only replacement was not by trolleybuses anymore,
            but by Diesel buses. The trolleybuses themselves were to be
            replaced by Diesel too. The "Carvalhosa" route was closed,
            which was the end of the line numbers 2, 4 and 5. Their work
            was taken over by the "Palácio" lines 3, 18 and 19.
            Also the Batalha - Boavista route disappeared, which was the
            end of the lines 16 & 17. Soon after that the lines via
            "Palácio" were cut back from Carmo to Boavista. And
            from 1978 in the late evenings (after 21h00) and on sundays
            the tram operations were suspended complete. A long period
            without alterations followed, except for the replacement of
            line 3 by Diesel buses in 1984. The maintenance of the cars
            was poor. All looked that the final closure could happen any
            moment. The routes of the 1984-1993 network were:
 
              In September 1993 the route to Matosinhos was closed. Line
            19 was taken over by buses and line 1 cut back to the
            Castelo do Queijo. One year later also line 1 was replaced
            by buses, leaving only line 18.1 - Infante - Alfândega - Massarelos - Foz
                (Castelo) - Castelo do Queijo - Matosinhos (11 September
                1993 cut back to Castelo do Queijo, closed 10 September
                1994)18 - Carmo - Massarelos - Foz (Castelo) - Castelo do
                Queijo - Fonte da Moura - Boavista19 - Boavista - Fonte da Moura - Castelo do Queijo -
                Matosinhos (Closed 11 September 1993) 
 
  
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