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User reviews:
Positive (10 reviews) - 100% of the 10 user reviews for this game are positive.
Release Date: Jan 8, 2014

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This content requires the base game Train Simulator 2017 on Steam in order to play.

Buy Train Simulator: Union Pacific DDA40X Centennial


About This Content

The EMD DDA40X comes to Train Simulator, and talk about arriving in style - with 6,600hp and a mammoth length of 98ft, the DDA40X says it loud and clear: 'if you're gonna have a locomotive, have a LOCOMOTIVE!'.

The giant DDA40X first ran in 1969, when Union Pacific was getting ready to retire its fleet of gas turbine locomotives and wanted to move its diesel technology forward. Given an 'X' suffix for 'eXperimental', the DDA40X (re-designated DD40X by the Union Pacific Railroad) was introduced not only to haul heavy freight trains, but also to act as a test bed for new systems which would soon be found on other EMD locomotives. Externally, the most obvious new design was the full-width or ‘Comfort’ cab, which became commonplace across the EMD range. This giant loco also earned the nickname 'Centennial' after it hauled the Gold Spike Ltd on May 10 1969.

At 98 feet long and with 6,600hp, the DDA40X has real rail presence. Developed by Digital Train Model, the locomotive includes many realistic features such as cab lights, step lights, number board lights and folding mirrors. Three variations are modelled, including the preserved #6936.

The locomotive is also Quick Drive compatible, giving you the freedom to drive the Union Pacific DDA40X Centennial on any Quick Drive enabled route for Train Simulator, such as those available through Steam. Also included are scenarios specifically for the Sherman Hill route (available separately and required to play these scenarios).


Four scenarios for the Sherman Hill route:
  • Business Tour
  • Entering Slowly to Cheyenne
  • Orders at Granite
  • Test by Electro-Motive

More scenarios are available on Steam Workshop online and in-game. Train Simulator’s Steam Workshop scenarios are free and easy to download, adding many more hours of exciting gameplay. With scenarios being added daily, why don’t you check it out now!

Click here for Steam Workshop scenarios.

Key Features

    EMD DD40X Centennial in Union Pacific livery
  • Three variations – Type 1, Type 2 and Green Hood
  • In-cab lighting
  • Step lights
  • Strobe light
  • Number board lights
  • Folding front and rear mirrors
  • Realistic instrument readouts
  • Quick Drive compatible
  • Scenarios for the Sherman Hill route
  • Download size: 398mb

System Requirements

    • OS: Windows® Vista / 7 / 8
    • Processor: 2.8 GHz Core 2 Duo (3.2 GHz Core 2 Duo recommended), AMD Athlon MP (multiprocessor variant or comparable processors)
    • Memory: 2 GB RAM
    • Graphics: 512 MB with Pixel Shader 3.0 (AGP PCIe only)
    • DirectX: Version 9.0c
    • Network: Broadband Internet connection
    • Storage: 6 GB available space
    • Sound Card: Direct X 9.0c compatible
    • Additional Notes: Quicktime Player is required for playing the videos
Customer reviews
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Positive (10 reviews)
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10 reviews match the filters above ( Positive)
Most Helpful Reviews  Overall
16 of 18 people (89%) found this review helpful
Posted: November 1, 2014
Okay, where do I start with this one?

Three separate Models: #6936, the last preserved DD40, a weathered edition, and a clean edition,
The 6936 has different horn sound from the weathered and clean edition.
Each models has different features such as strobe and horn placement
Great sounds, well recorded and accurate
Opening Cab windows and doors that ACTUALLY AFFECT IN-CAB VOLUME!
Class, platform, number, and strobe lights.
Scenarios for Sherman Hill
Moving brake shoes and cylinders

The flange noise as well as the wind-flow draft are is a little loud, and kindof drowns out everything else.
Horn and bell are VERY quiet from in-cab.
No brake pressure bleed-off sounds.

In conclusion, I would reccommend this loco to EVERYONE, because this add-on may be one of the best currently available, and is ABSOLUTELY worth the money!
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12 of 13 people (92%) found this review helpful
Posted: November 2, 2015
This is a wonderful add-on. A friend bought it for me in September and I love it! Has a really nice horn and I love driving it!
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9 of 9 people (100%) found this review helpful
1 person found this review funny
Posted: February 6, 2015
You climb up into this huge locomotive and the first thing you notice is the thrum or the twin engines. Yep, that's right. Two 3300 HP diesels. And yep, it does kinda sound like you're hearing two engines.

Here's a few things to keep in mind. Despite having 6600 HP it will not pull like some of the new engines. It does not have the tractive effort of them either. It really can't lug up hills below 23 mph or so. As it's geared higher for speed the ameters are buried well into the red. However it does have speed. Few large diesels can make 90 mph!

Don't bother with using the dynamic brakes going downhill with a heavy consist though. They're nearly useless. They do work, the ameters say they work. When you apply them there is a shudder in the locomotive like they work. Even the fan on the top that cools the resistors works. But then you realize you're still gaining speed! This is my single largest complaint about this locomotive as I love the routes with mountains. The normal air brakes do work well. They apply very fast. (while I'm not pro, I suspect unrealisticly so).

Another lesser complaint - in fact I'm not sure I'd really care to be honest - is that you cannot couple it to a "dead" locomotive and have it work. This is true of a couple of other DTM locomotives. Any other engine works fine. No clue what causes it or why but cranked up at notch 8 it'll do all of 2 mph pulling a single dead engine behind it.

Here's what I see as the pros and cons:

+ It's a DDA40X. A Big Jack. This is good.
+ In general the sounds are very good.
+ With the exception of the speedometor, the interior is good
+ The exterior is excellent.
+ Realistic simulation of the voltage switching as the locomotive accelerates. (It feels like it shifts gears).
+ it comes with three different models to fit virtually any scenario you wanted to make. One that is older looking and weathered. One that is less weathered and has a couple of different things changed.. horns on top in a dif spot etc, and the third - how 6936 looks today including the air conditioner that was installed on top of the cab.
+ Lights on the outside light up - such as the number panel - with switches on the inside.

Now the not-so-good:

- The braking on the dynamic brake is attrociously bad.
- Part of the speedometer is hidden by another panel. Very annoying for anyone who doesn't want to use the HUD. You can see this in a screenshot above.
- It will not work when connected to "dead" engines. I believe if you put another locomotive between them it does work however.

Despite the fact that I see the dynamic brake as a massive fall back I'm going to recommend it - but get it on sale. First, it may be that it is realistic, tho two SD40's provide much superior braking force and should be approximately equivalent. Second, almost everything else about it is very good. Coupled with the fact that it's an iconic American engine it's an excellent addition to anyones collection.
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6 of 7 people (86%) found this review helpful
1 person found this review funny
Posted: January 24, 2015
i really like this train with the abilty to open and close the doors and windows
i think its worth the price and i get to drive one of my favourite trains
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4 of 4 people (100%) found this review helpful
Posted: January 14
The DDA40X is, as far as I know, the most powerful diesel-electric locomotive to date. Nuff said. The way it's recreated in TS does not disappoint. The quality of this addon is above average IMO. That's because:
- the sounds seem to be just right (I can't tell if they are accurate). The loco does really sound like it has two engines
- there's a lot of lights that you can turn on and off separately, even a strobe light
- openable windows and doors. it's not really useful but adds some value to the product
- there are 3 variations included, this doesn't happen often with loco DLCs. nowadays most locos are released with just a single livery
- the included scenarios are enjoyable and reasonably long
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3 of 3 people (100%) found this review helpful
5 people found this review funny
Posted: August 31, 2015
This thing accelerates like it's being chased by the devil. Be a man, buy a real locomotive. A man's man's locomotive. Get the DDA40X.
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2 of 2 people (100%) found this review helpful
Posted: November 23, 2015
Has more wheels than normal train. There4 better train. Also twin engine.

More seriously, it's different than other content in the game, the ability to play around with doors and windows in the cabin is amazing.

1 annoying thing (very minor) brake shoes are visible but don't move, don't know if this is possible to do but watevs.

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2 of 2 people (100%) found this review helpful
Posted: March 30
This Diesel Locomotive Have 2 Engines, 16 Wheels And 8 Axles.
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2 of 3 people (67%) found this review helpful
Posted: July 12, 2015
i like this locomotive
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3 of 8 people (38%) found this review helpful
1 person found this review funny
Posted: March 18, 2015
I have purchased this Locomotive its in my library could someone please explain to me why i cannot find it or use it in my TS 2015 game :-(
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