_tram_on_line_13_(Vallilanlaakso%2C_Helsinki%2C_Finland)_May_6%2C_2026.jpg)
5 photos from Wikimedia Commons · credits & licences
- 1. Nr I 34 in Hakaniemi: Kalle Id· CC BY-SA 3.0
- 2. MLNRV1 (Valmet Nr I) tram on line 13 (Vallilanlaakso, Helsinki, Finland) May 6, 2026: Lasse Keskinen· CC BY 4.0
- 3. Valmet Nr I Helsinki 125908: Skelanard (Aleksandr Petukhov)· CC BY-SA 4.0
- 4. Valmet Nr I line 3: Sharon Hahn Darlin· CC BY 2.0
- 5. Valmet Nr I no. 63 in 1987: Felix O· CC BY-SA 2.0
what is it?
Nr I is a class of articulated six-axle (B′2′B′ wheel arrangement), chopper-driven tram operated by Helsinki City Transport on the Helsinki tram network. All trams of this type were built by the Finnish metal industry corporation Valmet between the years 1973 and 1975. Between 1993 and 2004 all trams in the class were modernised by HKL and redesignated as Nr I+ class.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 53 years ago, in 1973.
- Weighs about as much as 5 African elephants (~6 t each).
- 20.1 m long: about 4 cars parked nose to tail.
- Seats 106: 2 full city buses (~50 seats each).
- Still in service after 53 years.
tram / light rail: Street-running or light-rail vehicles that share or skirt the road.
spec sheet
- built
- 1973
- in service from
- 1973
- status
- in service
- number built
- 40
- kind
- tram / light rail
- traction
- electric
- origin
- 🇫🇮 Finland
- builders
- Valmet
- operators
- Helsinki City Transport, Metropolitan Area Transport Ltd
- top speed
- 60 km/h
- power
- 260 kW
- gauge
- 1,000 mm metre gauge
- electric system
- 600 V DC overhead lines
- length
- 20.1 m
- weight
- 28 t
- capacity
- 106 passengers
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q4354111, Wikipedia: Valmet Nr I (CC BY-SA 4.0).Updated 2026-10-25.