#3615

Indian locomotive class YDM-4

🇨🇦 Canada ·built by American Locomotive Company· from 1961· class of Indian diesel-electric locomotive

🛤️ diesel locomotive diesel ✓ in service

10 photos from Wikimedia Commons · credits & licences

1. YDM4-6669 Jaipur Junction, 2008 (3): Bahnfrend· CC BY-SA 3.0
2. YDM4-6669 Jaipur Junction, 2008 (1): Bahnfrend· CC BY-SA 3.0
3. Meter gauge diesel locomotive YDM4 6200: Rohini· CC BY-SA 4.0
4. Away from the crowd LMG's YDM4 ^6392 - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0
5. Cambodia YDM4-6428: カップメーン· CC BY-SA 4.0
6. Gokul Express entering Risia behind Izatnagar based YDM4 - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0
7. IZN blue YDM4 ^6755 at ASH - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0
8. IZN YDM4 -6329 at ASH - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0
9. IZN YDM4 -6581 at ASH - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0
10. IZN YDM4 -6581 from side at ASH - Flickr - Dr. Santulan Mahanta: Santulan Mahanta from Golaghat (GLGT), Guwahati (GHY), Lucknow (LKO), New Delhi (NDLS), INDIA· CC BY 2.0

what is it?

The YDM-4 is a class of diesel locomotives operating on Indian Railways. The first units were built by the American Locomotive Company (Alco) in 1961. Since 1968, members of the class have been manufactured in India by the Banaras Locomotive Works (BLW), Varanasi.

who runs it

Indian Railways IRCON International Keretapi Tanah Melayu rail transport in Myanmar Vietnam Railways rail transport in Cambodia Mozambique Ports and Railways

base stats

speed 96 km/htop speed
power 1 MWpower output
weight 72 tin working order
built 695made in total

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 65 years ago, in 1961.
1 MW is about 12 family cars (~85 kW each) flat out.
Weighs about as much as 12 African elephants (~6 t each).
15.6 m long: about 3 cars parked nose to tail.

diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).

spec sheet

built: 1961–1993
status: in service
number built: 695
kind: Diesel
traction: diesel
origin: 🇨🇦 Canada
builders: American Locomotive Company, Montreal Locomotive Works, Banaras Locomotive Works
operators: Indian Railways, IRCON International, Keretapi Tanah Melayu, rail transport in Myanmar, Vietnam Railways, rail transport in Cambodia, Mozambique Ports and Railways
top speed: 96 km/h
power: 1 MW
gauge: 1,000 mm metre gauge
wheel arrangement: Co-Co
length: 15.6 m
weight: 72 t

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q23926732, Wikipedia: Indian locomotive class YDM-4 (CC BY-SA 4.0).Updated 2026-10-25.