https://en.wikipedia.org/wiki/Toronto_Pearson_International_Airport#Train
https://en.wikipedia.org/wiki/Nippon_Sharyo_DMU
| Car length | 85 ft (25.91 m) |
|---|
https://upload.wikimedia.org/wikipedia/commons/9/9f/UP_at_Bloor.jpg While a 2 car joke of a train is only about 170 ft or 52 m, a 3 car train is about 255 ft or 78 m. Unfortunatly, the embarrassingly short train to YVR was only designed to have 164 ft or 50 m stations. The YVR-Canada-Line was deliberately constructed to not allow for enough clearance to eventually double the length of each station. Thus, any underground station can't be extended from the absurd 50 m to 100 m.
Depending upon the busy and general demand times there are three-car and two-car train sets.
https://en.wikipedia.org/wiki/Toronto_Pearson_Terminal_1_station
https://en.wikipedia.org/wiki/Union_Pearson_Express#Rolling_stock
"Seven trains comprise the fleet of Union Pearson Express (UP Express), grouped into 4 three-car and 3 two-car train sets (for a total of 18 cars)." https://en.wikipedia.org/wiki/Nippon_Sharyo_DMU#Union_Pearson_Express
https://en.wikipedia.org/wiki/Urban_rail_transit_in_Canada#Existing_systems
