SkyTrain rolling stock
Summary

Builder
Model
Year acquired
Fleet size
Urban Transportation Development Corporation
ICTS Mark I
1984–1986
114 cars: 001 to 056; 061 to 118
Urban Transportation Development Corporation
ICTS Mark I
1990–1991
16 cars: 121 to 136
Urban Transportation Development Corporation
ICTS Mark I
1994–1995
20 cars: 137 to 156
Bombardier Transportation
ART Mark II
2000–2002
60 cars: 201 to 260
Bombardier Transportation
ART Mark II
2009
34 cars: 301 to 334
Bombardier Transportation
ART Mark II
2010
14 cars: 335 to 348
Bombardier Transportation
Innovia Metro Mark III
2016
28 cars: 401 to 428
Bombardier Transportation
Innovia Metro Mark III
2019
28 cars
Hyundai Rotem
EMU
2009
40 cars: 101 to 120; 201 to 220

Question: How many 150 Mark I cars does SkyTrain rolling stock have and when were they added?
Answer: SkyTrain rolling stock has a total of 150 Mark I cars: 114 dating from 1984–1986, 16 added in 1991 and 20 added in 1994.