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Coupling and Uncoupling - And Many Details!

In both Hamburg and Berlin, a full train consists of multiple trainsets. On Hamburg’s U3, that’s typically two DT5 units coupled together, while in Berlin, up to four A3L92 units can run in succession on lines U1 and U3. So today, we’re taking a closer look at how coupling and uncoupling actually works.

[h2]Coupling and Uncoupling the DT5[/h2]

Since the MEGA update for SubwaySim 1, you’ve already been able to couple and uncouple the DT5—such as in the graffiti scenario where you had to return a tagged train to the depot. (Fun fact: in SubwaySim 2, you no longer drop it off at a station, but directly at Hellbrookstraße Depot, short Bba.)

Coupling is simple: slowly approach the other train and stop just before contact. Then drive forward at about 2–3 km/h—this activates the Scharfenberg coupler, and the units will connect mechanically.



If you take a closer look in SubwaySim 2, you’ll spot a new detail: the electrical contact coupling is now animated and locks into place shortly after the mechanical coupling. You can watch the entire process from the exterior or freeflight camera.

Once the units are coupled, a message appears on the display asking you to confirm the new train configuration. You’ll need to deactivate the current cab, then reactivate it to confirm the new setup — and that’s it! To uncouple, just use the driver’s key, turning it to the left.



[h2]How Does It Work in Berlin?[/h2]

Berlin’s vehicles also use Scharfenberg couplers, so coupling two identical trainsets works similarly to the DT5. The procedure is much the same: stop about a metre before the second unit, then approach at 2–3 km/h.



Coupling usually occurs when a specific train configuration is needed for a service. Uncoupling typically happens when a train is too long for a siding, or when a car needs to be replaced—for instance, due to graffiti or a damaged window.



In emergencies, different vehicle types may be coupled—like coupling an A3L92 with an HK. In such cases, the vehicles are mechanically coupled only, meaning only one of them can brake, so extreme caution and reduced speed are essential.

[h2]And How Do I Uncouple It?[/h2]

While coupling works similarly across all types, uncoupling is where things differ—mainly in how and where it’s done.

Let’s start with the HK. The uncoupling button is located on the side of the driver’s desk. First, you need to open a small flap.



Behind it, you’ll find the button to release both the mechanical and electrical coupling. A single press and the two HK units can once again operate separately.



On the A3L92, there’s no button—instead, you’ll find an uncoupling valve under the left table in the cab. You’ll need to open a panel to access it.



Press the valve by hand for about 3 seconds. Compressed air flows from the supply line into the uncoupling cylinders, which separates the two units. And just like that, they’re ready to continue on their separate journeys.



All aboard - join us to gain deeper insights into the world of SubwaySim 2 and make sure not to miss any exciting announcement!

[h2]About SubwaySim 2[/h2]

SubwaySim 2 has been announced in August 2024 and is currently in development. In the coming weeks, we’ll be giving you insights into the game, its development process, and the new features. Feel free to share your feedback in the Steam Discussions, join our Discord server, and follow us on Instagram. Be sure to add SubwaySim 2 to your Steam or PlayStation Store wishlist so you don’t miss any updates!

https://store.steampowered.com/app/2707070/SubwaySim_2/

Note: This is a work-in-progress version of the game. All screenshots and videos shown are for preview purposes only and are not representative of the final product. Please feel free to share your feedback in the Steam Discussions if you like what you see or notice any specific issues!

Our Strong BRANDS!

Today, we have some exciting news for you! We’re taking a closer look at the official brands that will be featured in SubwaySim 2—because they’re an essential part of the experience.

[h2]From Hamburg...[/h2]

SubwaySim Hamburg was already developed with the kind support of Hamburger Hochbahn AG. Thanks to an official license, we were able to authentically recreate their logo and corporate design. Throughout the development of both SubwaySim titles, HOCHBAHN has continuously provided us with valuable information and feedback. Naturally, the HOCHBAHN logo is once again prominently displayed on the front of the DT5.



If you look closely, you’ll notice a small new detail on the DT5 that wasn’t present in SubwaySim 1. We’ve now included the distinct light signature of the DT5’s front headlights, making it even more authentic!



At this point, we’d like to express our gratitude to our Hamburg partners, hvv (Hamburger Verkehrsverbund) and especially Hamburger Hochbahn AG, for their excellent collaboration. Thanks to their support and the opportunity to study the DT5 down to the smallest details at the depot (see image below), we were able to recreate Hamburg’s U-Bahn with remarkable accuracy and recognizability!



[h2]... to Berlin[/h2]

Many of you have been asking about BVG logos in SubwaySim 2. In previous screenshots, the BVG logo was missing. Today, we have some fantastic news for you: All BVG vehicles in the game will now feature the original logo!



And it’s not just the vehicles! Between Möckernbrücke and Gleisdreieck, you’ll also find the BVG headquarters—easily recognizable by the large BVG logo displayed above the U1/U3 tracks. When approaching from Warschauer Straße, you’ll drive right underneath the iconic sign.



[h2]The Original Sound[/h2]

In addition to branding, every subway system has its own unique sound. This time, we’re not talking about train sounds but rather the announcements that create an authentic underground atmosphere.

For SubwaySim Hamburg, we collaborated with HOCHBAHN to include announcements by Anke Harnack, the real voice of Hamburg’s U-Bahn. Now, we’re thrilled to announce that we’ve also recorded Philippa Jarke, the original voice of the BVG, for the Berlin U-Bahn in SubwaySim 2! Her distinctive voice is instantly recognizable to Berliners and visitors alike—and now, you’ll hear her in SubwaySim 2 as well!



Berlin also features some unique announcement differences compared to Hamburg. In Berlin, each stop is followed by an announcement of the next destination, along with the classic "Einsteigen bitte" ("Please board") and, shortly after, "Zurückbleiben bitte" ("Please stand back"). Soon, you’ll be able to trigger these announcements yourself using the buttons in the image below!



All aboard - join us to gain deeper insights into the world of SubwaySim 2 and make sure not to miss any exciting announcement!

[h2]About SubwaySim 2[/h2]

SubwaySim 2 has been announced in August 2024 and is currently in development. In the coming weeks, we’ll be giving you insights into the game, its development process, and the new features. Feel free to share your feedback in the Steam Discussions, join our Discord server, and follow us on Instagram. Be sure to add SubwaySim 2 to your Steam or PlayStation Store wishlist so you don’t miss any updates!

https://store.steampowered.com/app/2707070/SubwaySim_2/

Note: This is a work-in-progress version of the game. All screenshots and videos shown are for preview purposes only and are not representative of the final product. Please feel free to share your feedback in the Steam Discussions if you like what you see or notice any specific issues!

Finally: Long-Awaited Detail Shots of the HK!

We've been teasing the Berlin HK for quite some time. While you’ve already seen a few glimpses, today we’re taking a deep dive into this fascinating train series - finally showing you all the details in full.

[h2]The Berlin HK[/h2]

The HK is the successor to the A3 series and was developed based on the Berlin H-Type. Right away, you’ll notice that the HK looks significantly more modern than the A3.



[h2]Facts about the HK[/h2]

The two HK prototypes were built in 1999, followed by series production between 2001 and 2007 by Adtranz/Bombardier. The HK was designed specifically for Berlin’s Kleinprofil (small-profile) network. In total, 24 four-car units were built, all of which remain in regular service today. The HK has a maximum speed of 60 km/h, which is standard for Kleinprofil trains.

Like the Berlin H-Type, the HK features a walk-through design, but with four permanently coupled cars instead of six. Each unit consists of A, B, C, and D cars, all seamlessly connected by open gangways. For full-length trains (which in the Kleinprofil network have eight cars), two HK units operate in double traction.



The HK was also designed with automated operation in mind and offers improved energy efficiency along with a modern passenger information system. Unlike older models, it features continuous gangways with flexible bellows, creating a more open and spacious interior.



[h2]The Heart of the Train: The Driver’s Cab[/h2]

We’ve paid special attention to the details here, as you’ll be spending quite some time in the HK’s cab in SubwaySim 2! Compared to other series, there are major differences in how this train operates.



The control panel looks noticeably more modern, and unlike older series, the train destination display is now set via a digital screen. This makes entering destinations much easier, as there’s no longer a need to refer to a list of numbered codes like on the A3L92. The display only shows valid stations for the selected line.



Train operation is also significantly different: While speed is preselected similarly to the A3L92, this is done conveniently via a set of push buttons. There’s even an additional button to increase speed by +5 km/h on demand.



A key feature of the HK is its combined power and brake lever, which simplifies control. Once the spring-loaded brake is released, you push the lever forward to accelerate to the selected speed. When released, the lever automatically returns to its neutral position. To brake, simply pull the lever backward.



[h2]The devil is in the details: About A- and D-cars[/h2]

On some sections of the Kleinprofil network, the tunnels are too narrow to allow passenger evacuation through the side doors. Instead, evacuation takes place through a dedicated front-facing door in the driver’s cab. This means that when two HK units operate together in double traction, both leading cabs need to be accessible.

What sounds simple was actually a unique challenge in development. The doors needed to be positioned at the exact same off-center location in both cabs—the A-car cab (leading toward Krumme Lanke) and the D-car cab (leading toward Warschauer Straße). As a result, the A and D cars are mirror images of each other, rather than being rotationally symmetrical like most train designs. Luckily, our 3D artists developed an efficient workflow to tackle this challenge. The result? See for yourself—A-car on the left, D-car on the right.



If you look closely, you’ll notice that this affects much more than just the exterior design. The driver’s cab setup is also quite different. Not only is the cab desk positioned differently in both end cars due to space constraints, but even the control elements on the side panel are mirrored. What a fascinating train!



All aboard - join us to gain deeper insights into the world of SubwaySim 2 over the next few weeks and months!

[h2]About SubwaySim 2[/h2]

SubwaySim 2 has been announced in August 2024 and is currently in development. In the coming weeks, we’ll be giving you insights into the game, its development process, and the new features. Feel free to share your feedback in the Steam Discussions, join our Discord server, and follow us on Instagram. Be sure to add SubwaySim 2 to your Steam or PlayStation Store wishlist so you don’t miss any updates!

https://store.steampowered.com/app/2707070/SubwaySim_2/

Note: This is a work-in-progress version of the game. All screenshots and videos shown are for preview purposes only and are not representative of the final product. Please feel free to share your feedback in the Steam Discussions if you like what you see or notice any specific issues!

A Look at Our Dedicated AI Traffic Vehicles!

Last week, we were up close with the player, and today we're taking things to the complete opposite end of the spectrum. We’re showing you how public transport in Berlin and Hamburg comes to life - because if only you as players were riding trains, the cities would feel rather empty. That’s why this week’s topic is AI rail traffic.

[h2]Many Vehicles For a Vivid Environment[/h2]

In SubwaySim 2, not only are the player-operated lines running on their real-world schedules. Even visible lines and additional public transport beyond the subway are included. Additionally, in Berlin, a purely AI-controlled version of the famous GI1E multiple unit, also known as "Gisela," operates on Line U2 alongside the A3L92 and HK trains. Even though the U2 is not usable for you as players, tracks are still in place to simulate AI rail traffic as closely as possible.



You might be wondering why laying out tracks is necessary in these areas. One reason is to ensure that AI train travel times feel realistic. For example, if you encounter an AI-operated U2 train at Wittenbergplatz in Berlin and continue toward Warschauer Straße, you will then see the same train arriving at Gleisdreieck.



Additionally, tracks serve as our fixed reference point in the world—from there, the environment is built, stations are constructed, and the city is shaped. By preparing this foundation early, it also becomes easier for us to possibly expand with additional lines and stations in the future.



[h2]S-Bahn Trains[/h2]

Even beyond the subway system, SubwaySim 2 includes rail AI traffic - particularly for other rail-bound means of transport. In addition to the U-Bahn, our new game features trains from Berlin's and Hamburg's S-Bahn (light rail) networks, adding even more life to the cityscape. To achieve the most authentic representation of these systems, we have recreated the class 481/482 for Berlin and the class 474 for Hamburg.



Just as any other AI vehicles, S-Bahn trains also run on their real-world timetables. This means you can see them arriving at well-known stations at their usual times—whether at Warschauer Straße in Berlin or at major transit hubs like Barmbek and Berliner Tor in Hamburg. Thanks to frequent AI traffic, the entire network feels much more alive, providing an even more immersive experience. It truly creates the impression of a vibrant, fully functioning urban transit system, where not only you as players are traveling, but also countless other virtual passengers reach their destinations.



[h2]One More Thing...[/h2]

And there's even more! Berlin features one more highlight: When arriving at the Warschauer Straße terminus station, you can enjoy a clear view of the M10 tram line. That's why we decided to include yet another vehicle, namely Berlin's Flexity tram, together with its stations. And just like the subway and S-Bahn, the tram also operates on its real-world timetable—so you can watch it transport passengers from Warschauer Straße across the bridge and northward.



All aboard - join us to gain deeper insights into the world of SubwaySim 2 over the next few weeks and months!

[h2]About SubwaySim 2[/h2]

SubwaySim 2 has been announced in August 2024 and is currently in development. In the coming weeks and months, we’ll be giving you insights into the game, its development process, and the new features. Feel free to share your feedback in the Steam Discussions, join our Discord server, and follow us on Instagram. Be sure to add SubwaySim 2 to your Steam or PlayStation Store wishlist so you don’t miss any updates!

https://store.steampowered.com/app/2707070/SubwaySim_2/

Note: This is a work-in-progress version of the game. All screenshots and videos shown are for preview purposes only and are not representative of the final product. Please feel free to share your feedback in the Steam Discussions if you like what you see or notice any specific issues!

Starting a Shift in Berlin and Hamburg

Today, we’re taking you on a different kind of journey. We’re looking at how starting a shift in Hamburg differs from Berlin. And one thing is clear: just as the two cities are unique, so are their U-Bahn systems.

[h2]Starting a Shift in Hamburg[/h2]

SubwaySim 2 brings several improvements to the timetable system. In SubwaySim 1, train deployments and withdrawals were already simulated correctly, but players had limited opportunities to operate these services themselves. That changes in SubwaySim 2! Now, you’ll have the chance to start routes from a depot - such as the Hellbrookstraße depot (Bba), which we introduced back in December.

But enough talk - let’s take the driver’s seat and begin our shift!



If you’ve played SubwaySim 1, this screen will look familiar. This list determines the train number, which you then enter into the IBIS (Integrated Onboard Information System). In real life, this information is used for the destination display, interior information screens, and announcements. In Sandbox Mode (formerly Expert Mode), we also use the IBIS code to determine your route’s final destination.



The train number consists of the departure station and departure time, while the destination number is taken directly from the list. Now, when we check the front of the DT5 or the in-car displays, they already show the correct destination - passengers can begin boarding!

Interestingly, many trains on Hamburg’s U3 initially display a "wrong" destination. For example, trains heading to Wandsbek-Gartenstadt first show "Hauptbahnhof Süd" (as seen above). Only after passing Sierichstraße does the destination automatically switch to "Wandsbek-Gartenstadt" - just like in real life, and in SubwaySim as well.



[h2]Starting a Shift in Berlin[/h2]

We start our day in Berlin in a similar way. This time, we head to the Warschauer Straße depot - which we previously introduced in a post. Today, we’ll be taking out an A3L92 train.



Berlin also uses a code-based system - however a totally different one than Hamburg. The A3L92's system is called ELA (Elektrische Lautsprecheranlage, or Electric Loudspeaker System). Unlike Hamburg, Berlin uses a fixed four-digit code for each start-destination combination on a line. This code remains the same regardless of time or direction.



To find the correct code, we first select the right line. In this case, we’re starting a U3 service from Warschauer Straße (WA) to Krumme Lanke (K). So, we check the last row (departure from WA) and the first column (arrival at K). The number 3390 appears - this is the code we enter into the ELA system.

Each A3L92 consists of two cars: a K-Wagen (Compressor Car) and an S-Wagen (Control Car). The S-cars always have even numbers, while the corresponding K-car has the next odd number. On the A3L92, the even-numbered car always leads towards Krumme Lanke. Depending on whether you enter the code in the S-Wagen or K-Wagen, the ELA system assigns the correct direction for your journey.



Once we confirm the input, the rollband display on the A3L92 scrolls to the correct destination. The in-car displays and announcements are also controlled by the ELA input. Lastly, in Sandbox Mode, the ELA code also serves as an instruction for the signal box, indicating where your journey is headed. Ready for departure!



All aboard - join us to gain deeper insights into the world of SubwaySim 2 over the next few weeks and months!

[h2]About SubwaySim 2[/h2]

SubwaySim 2 has been announced in August 2024 and is currently in development. In the coming weeks and months, we’ll be giving you insights into the game, its development process, and the new features. Feel free to share your feedback in the Steam Discussions, join our Discord server, and follow us on Instagram. Be sure to add SubwaySim 2 to your Steam or PlayStation Store wishlist so you don’t miss any updates!

https://store.steampowered.com/app/2707070/SubwaySim_2/

Note: This is a work-in-progress version of the game. All screenshots and videos shown are for preview purposes only and are not representative of the final product. Please feel free to share your feedback in the Steam Discussions if you like what you see or notice any specific issues!