Y1 diesel-hydraulic railcars — original Fiat ALn 668-derived units rebuilt with Volvo DH10 engines (2×160 kW = 320 kW total); some units retain original Fiat engines (~294 kW)
Locomotive Weight
45–47 tonnes (Y1 railcar)
Track Gauge
1,435 mm (standard gauge)
Braking Technology
Air brakes (standard for Swedish rolling stock)
Route Engineering Challenges
1,318km non-electrified single-track route through remote wilderness with no major population centers
Crossing the Arctic Circle with harsh winter conditions requiring seasonal-only operation
Long distances between stations in sparsely populated interior requiring self-contained railcars
Maintains heritage rolling stock in remote operational base far from major railway workshops
Railcar length
24.4 m per railcar
Max speed
130 km/h
Seating capacity
68–76 seats per railcar (reduced in cargo variant)
Fleet
100 Y1 units built 1979–1981 by Fiat/Kalmar Verkstad; significant fleet still in service
Electrification
Non-electrified throughout; southernmost section Kristinehamn–Nykroppa is electrified but not used by Inlandsbanan
Route character
Single track, passing loops at major stations; remote wilderness without regular services outside tourist season
Operational model
Hop-on/hop-off flexible itinerary; passengers break journey as needed across multiple days