Six Alvra trains No. 5701 to 5706 were built 2015 to 2017 by Stadler
for the InterRegio trains between Chur and St. Moritz via
Reichenau-Tamins and Samedan. Each train consists of seven cars:
Cab car At 578 (can be uncoupled), first class end car A 570, first
and second class middle car AB 572, second class middle car B 577
with bicycle compartment and child play area, second class middle
cars B 573 and B 574, second class end car Bi 576 with low-floor
section and a "photo compartment" with opening windows. The trainset
is 131.45 m long, weighs 172 t empty and, except for the cab car,
can only be uncoupled in a workshop.