Original sentence: The line is served by customized trains consisting of only six cars due to the low passenger traffic
Edited sentence: Direction  North-South, on the east side of the city.In the original blueprint, this line was planned to extend to the north all the way to Ecatepec, Mexico State.It connects with Lines 1 at Candelaria, Line 6 at Martín Carrera, Line 5 at Consulado, Line 8 at Santa Anita, Line 9 at Jamaica and Line B at Morelos.It is also the line with the lowest passenger flow, which is why the STC introduced modified 6-wagon-trains.Line color  light blue.Passenger railway length  9.363 km.Rolling stock  Six-wagon trains built in Spain by C.Started operations  August 29, 1981: from Martín Carrera to Candelaria May 26, 1982: from Candelaria to Santa Anita.Stations  10.Total railway length  10.747 km.Type of line  8 elevated viaduct stations and 2 surface stations