26.06.2026

Spatial Algorithms for Digital Mobility

Building design

Aerial view of streets and urban architecture in vibrant colors, photographed by Scott Szarapka.

Anyone who thinks that spatial algorithms and digital mobility are just buzzwords for innovation competitions has missed the mark when it comes to today’s urban reality. In fact, algorithms are now controlling our cities in real time, altering traffic flows, connecting sharing systems, and posing questions about architecture that were unthinkable just a few years ago. Welcome to the era in which code is redefining space—with opportunities, risks, and a healthy dose of irony.

Spatial algorithms are the digital backbone of modern mobility and are fundamentally transforming cities in Germany, Austria, and Switzerland.
From traffic control to urban logistics: algorithms are increasingly determining how people and goods move.
Digital mobility is inextricably linked to big data, artificial intelligence, and real-time analysis—and challenges the traditional understanding of planning.
Smart mobility solutions offer opportunities for sustainability, land-use efficiency, and social inclusion, but they also raise new ethical and technical questions.
The greatest challenges lie in data access, governance, and the interoperability of a wide variety of systems.
Germany, Austria, and Switzerland exhibit different paces and cultures when it comes to dealing with digital mobility.
Architects, engineers, and urban planners must develop new skills to keep pace with these rapid changes.
The debate over algorithmic urban design is global—and the DACH region risks being overtaken by visionary pioneers.
Spatial algorithms are neither a panacea nor a curse—they are both a tool and a challenge.

From static city maps to learning systems: How algorithms control urban mobility

Anyone traveling through German, Austrian, or Swiss cities today has long been moving through an invisible network of codes, data streams, and automated decision-making processes. Spatial algorithms, programmed for maximum efficiency or minimum energy consumption, orchestrate traffic flows, optimize bus routes, calculate ride-sharing options, and control traffic light cycles. What used to be regulated by a static schedule or a municipal traffic control center now happens in real time and with a precision that dwarfs human planning. Yes, sometimes intuition falls by the wayside—but that’s the price of speed and scalability.

The biggest innovations in this area don’t necessarily come from the municipalities themselves, but rather from tech giants, startups, and platform operators. Google Maps, Moovit, Uber, Mobility, and Deutsche Bahn Connect rely on algorithms that learn from millions of data points on movement. And they do so at a speed that makes any municipal report seem like a relic from the Cretaceous period. Cities often react hesitantly: sometimes with their own digitalization initiatives, sometimes with regulatory experiments, but always with a certain skepticism toward the lack of transparency in algorithms.

But the algorithms themselves vary. There are classic routing algorithms, combinatorial optimizers, AI-based forecasting models, and data-driven simulations that analyze not only traffic but also the integration of mobility services, parking management, logistics, and public space. Anyone who wants to understand how mobility works today must know the code behind the scenes—and its limitations.

In practice, this means: Where urban planners and traffic engineers once worked with blueprints, scenarios are now simulated using software. How does the network respond during major events? What happens when a new bike path crosses a major traffic artery? How quickly can an autonomous shuttle respond to a detour? The answers are provided by algorithms fed by sensors, GPS data, ticket bookings, and social networks. The city becomes a living, learning system—and the architect becomes a data analyst against his will.

But is this really progress? Or just a new form of external control? The truth lies somewhere in between. Algorithms are powerful, incorruptible, and fast—but they are only as good as the data they’re fed and as fair as the goals set for them. Those who ignore this risk not only technical but also societal collateral damage.

Digitalization and AI: The New Foundation of Urban Mobility

Digitalization has long since moved beyond being merely a “nice-to-have.” It is a prerequisite for any serious discussion of mobility—and its impact is radical. With the integration of artificial intelligence (AI), spatial algorithms are reaching a new level of sophistication: They predict traffic jams, identify patterns in the use of sharing services, optimize last-mile delivery chains, and navigate autonomous vehicles through complex urban environments. The city is becoming a data-driven ecosystem that constantly regulates itself.

Germany, Austria, and Switzerland differ primarily in their digital infrastructure and in their political willingness to experiment with AI and big data. While Zurich and Vienna are considered pioneers in smart transportation platforms and open data, Germany often gets bogged down in the minutiae of data protection debates. Concerns about data sovereignty are justified, but they often lead to a paralysis of innovation—while international tech conglomerates have long since been making things happen.

Yet it is precisely in the intelligent interplay of AI, open interfaces, and cloud-based platforms that the greatest potential lies. Real-time data can predict traffic flows, dynamically adjust sharing services, and make optimal use of urban resources. But those who fail to invest will get stuck halfway—and leave the shaping of their city to the algorithms of others.

For architects and urban planners, too, the nature of their work is changing fundamentally. Anyone who still believes today that mobility is merely a matter of streets and parking spaces has failed to grasp the signs of the times. The new skills required are data analysis, algorithm design, and system integration. We must think of architecture and infrastructure as parts of a digital ecosystem that is constantly evolving—and that can respond to new demands at any time.

But digitalization also brings with it new dependencies. Who controls the data? Who decides on the algorithms? Who bears responsibility if an AI-controlled traffic system fails? These questions are far from answered—and they will continue to shape the debates surrounding the digital city for a long time to come.

Sustainability Between Algorithms and Reality: Opportunities, Contradictions, Visions

Spatial algorithms and digital mobility are seen as beacons of hope for sustainable cities. They promise lower environmental impact, more efficient use of land and resources, better connectivity for underserved neighborhoods, and a reduction in private motorized transportation. As always, the reality is somewhat more complicated. While algorithms can indeed smooth out traffic flows, reduce emissions, or make car-sharing models more attractive—provided they are fed the right parameters and embedded in a smart overall concept—

In practice, however, the principle of “technology first, sustainability later” dominates in many places. Even the smartest systems cannot single-handedly solve the space-hungry nature of traffic, urban sprawl in the surrounding areas, or the desire to own a car. Rather, a close integration of algorithm design, urban planning vision, and political will is needed. In Vienna, for example, mobility data is used to strategically target the placement of new mobility stations in underserved areas. In Zurich, traffic models are combined with climate data to identify particularly heavily trafficked corridors.

The greatest challenges lie in data access and interoperability. Sustainable mobility requires open interfaces, standardized data formats, and a governance framework that serves not only a quick return on investment but also the common good. All too often, however, data remains trapped in silos, is hoarded by platform operators, or is subject to legal restrictions. The result: digital tools operate with incomplete data—and reproduce existing inequalities.

Visionary voices are therefore calling for a new ethics of algorithmics: sustainability must become the core criterion for the development and application of spatial algorithms. This ranges from the energy efficiency of data centers to social justice in access to mobility services. Those who ignore this risk digital mobility becoming an exclusive playground for urban elites—and the grand promises of sustainability coming to nothing.

In the end, the realization remains: Algorithms are not a panacea. They are tools that only unfold their full potential when combined with good data, bright minds, and societal oversight. And that is precisely what is still too often lacking in the DACH region.

Technology Meets Planning: New Skills and Old Resistance

For professionals in architecture, engineering, and urban planning, the algorithmic shift means one thing above all: a change in mindset is essential. Those who continue to think solely in terms of buildings, transportation corridors, and neighborhood plans will be left behind by reality. The new requirements are data literacy, system integration, and the ability to manage complex, interdisciplinary projects. The job profile is shifting: architects are becoming facilitators between software development, transportation planning, and politics. Engineers suddenly have to communicate with AI developers, and urban planners are sitting in workshops with data scientists.

Entering this new world is challenging. It requires technical expertise, an understanding of the limitations of algorithmic models, and a sense of the societal implications of digital mobility. Far too often, however, continuing education falls by the wayside—whether due to a lack of time, limited access to suitable programs, or simply a fear of losing control. The result: the management of digital mobility is left to external service providers, platform operators, or international corporations.

In addition, there are many traditional sources of resistance. The fear of data misuse, concerns about job losses in public transit, and uncertainty in the face of the rapid pace of digital transformation—all of this paralyzes the necessary realignment of the profession. But doing without digital skills is not an option. Planners and architects who want to remain relevant must engage with spatial algorithms and digital mobility solutions—and actively help shape their development.

At the same time, digitalization also opens up new opportunities: the ability to simulate scenarios in real time, organize participatory planning processes digitally, or rapidly scale sustainable mobility concepts. The key here is the ability to combine technology with urban thinking—and to avoid falling into the trap of a purely technocratic understanding of planning.

Whether the DACH region can keep pace depends less on the quality of the algorithms than on the willingness to break down old structures and dare to try something new. The future of the city is not designed on a drawing board—but is written through the dialogue between code, space, and society.

Global Debates, Local Answers: Architecture in the Grips of Digital Mobility

The discussion surrounding spatial algorithms for digital mobility has long been part of a global discourse. Cities such as Singapore, Copenhagen, Helsinki, and Shenzhen demonstrate how data-driven mobility systems can transform entire metropolises. They are setting standards in the integration of AI, the handling of big data, and the interconnection of mobility, energy, and neighborhood development. Looking beyond our own horizons shows that those who hesitate lose not only competitiveness but also creative freedom.

In an international comparison, the DACH region often appears overregulated, fragmented, and averse to innovation. While other places are experimenting and scaling up, here in Germany we’re debating standards, jurisdictions, and data protection. Of course, these safeguards are important—but they must not become an excuse for inaction. Those who want real progress must be willing to take risks, forge new partnerships, and learn from the best.

For architecture, this means that the city is no longer a self-contained entity, but rather a dynamic, interconnected system. Spaces are no longer created solely through design and construction, but through the interplay of algorithms, data, and human behavior. The challenges here lie not only in technology, but above all in governance, transparency, and democratic oversight of digital systems. Those who fail to engage in this debate risk the city becoming a pawn of opaque algorithms and private platforms.

At the same time, the global discourse opens up new perspectives: the opportunity to learn from other cities, leverage our own strengths, and understand digital mobility as part of a comprehensive urban development strategy. It takes courage, a willingness to experiment, and a new culture of collaboration between architects, engineers, IT experts, and the urban community. Only in this way can the DACH region hold its own in international competition—and make its cities fit for the future.

In the end, one thing is clear: the digital transformation of mobility is neither a curse nor a blessing. It is a challenge that demands creativity, responsibility, and a new understanding of architecture. Those who grasp this can shape the future of the city—rather than merely having to manage it.

Conclusion: The algorithm is the new city planner—if we let it

Spatial algorithms for digital mobility are more than just a technical add-on. They are the operating system of tomorrow’s city. Their potential is enormous: greater efficiency, greater sustainability, greater participation. Their risks are real: lack of transparency, inequality, loss of control. What matters most is how we deal with them. Architecture, urban planning, and politics must find the courage to understand, shape, and control technology. Only then will the algorithm become a tool for livable cities—rather than a black box of urban control by external forces. The future of mobility is digital. The question is: Who is at the wheel?

22.04.2025

Architecture

44 residential units in Saint-Denis from DREAM

Building design

The new building with 44 residential units by DREAM. Photo: Cyrille Weiner

Two decades after the devastating fire in a dilapidated residential building on Rue Fraizier in Saint-Denis, a new construction project marks a turning point in the urban development of the north of Paris. The Parisian agency DREAM (Dimitri Roussel) has realized a residential ensemble with 44 units there – half for rent, half as subsidized ownership according to the “Bail Réel Solidaire” (BRS) model. It is the first project of its kind in Saint-Denis. However, the ambitious gesture is less about architectural showmanship and more about functional, mass-produced housing that strives for social integration.

The new building stands on a site that has been derelict since the fire in 2001. The fire at the time drastically exposed the dilapidated conditions in the old building, which was being used by shark tenants. The ensuing vacancy was perceived not only as a physical defect, but also as a social one. DREAM now sees the project as a contribution to “repairing” the neighborhood – and to re-establishing trust in the urban space.

The 44 residential units are spread across several buildings and follow a clear principle: as much individuality as possible within the standardized production. Almost all of the apartments are open-plan, with many facing in several directions. The majority have generous outdoor spaces – balconies or gardens at ground level. Interior qualities have also been considered: separate entrance areas with storage space, daylight kitchens that can be closed off if required and large window openings with panoramic views are all part of the repertoire.

The floor plan design is based on the charter of Plaine Commune, the inter-municipal association responsible for the area. The urban positioning of the buildings responds to morphological and climatic analyses of the site. A typical planning response is, for example, the staggering and orientation of the volumes to optimize daylight and natural ventilation.

In terms of design, DREAM dispenses with design experiments. Instead, the architectural expression arises from the materiality and rhythm of the façade. Wooden slats, metal panels and open balcony structures made from a combination of wood and metal structure the outer shell. Great importance was attached to prefabrication: The timber frame construction walls, including cladding, windows and shading elements, were manufactured entirely in the factory. The self-supporting balconies also arrived on site pre-assembled.

This strategy has several advantages: Firstly, it increases the quality of execution, and secondly, it reduces the construction time – a factor that plays a particular role in the densely built-up and socially sensitive Saint-Denis. All in all, the result is a residential building that relies on CO₂-reduced construction methods without playing this off visually.

What is striking about the project is the effort to establish communal zones alongside the private living space – a concept that is often referred to elsewhere as “third places”. In Saint-Denis, the elements are simple but effective: a large, inviting entrance area, green inner courtyards with passageways and roof gardens that serve as places to retreat and meet. The lobbies act as semi-public buffer zones between the street and the apartments. Visual references to the courtyard are intended to provide not only light but also social control.

The whole project was designed in collaboration with the public housing association Plaine Commune Habitat. The aim is to appeal to a heterogeneous group of residents – both people on low incomes and young families who want to build up property through the BRS model.

With a construction cost of around seven million euros and a living space of 2,775 square meters (SHAB), the project is within the scope of what is feasible in a subsidized context. The “NF Habitat” certification and compliance with the French thermal insulation regulation RT 2012 with a 20 percent reduction underline the ecological focus.

Those involved in the project include Bollinger+Grohmann (structural engineering), ENEOR (building services), Le Sommer (certification) and Topager for the landscape architecture. Cap-Exe was responsible for coordinating the various trades.

What can be deduced from the project in Saint-Denis for the current housing debate? Certainly not a new type. Rather, it shows how a combination of solid planning, serial production and municipal control can make a contribution to sustainable urban development – beyond creative exaggeration, but also without falling into banal functionality.

The architecture remains restrained but deliberate. It unfolds its effect through everyday use – as a place to live, to meet and to reappropriate a long-neglected urban space.

31.10.2024

Ukraine war: Мы за мир

Building design

As a result of the war in Ukraine, the European architecture scene has quickly taken a public stand against the Russian war of aggression. G+L also stands in solidarity with the Ukrainian people and government.

BIG, David Chipperfield Architects, Foster + Partners, gmp, Herzog und de Meuron, MVRDV, OMA, Snøhetta, Zaha Hadid Architects – as a result of the war in Ukraine, which violates international law, the who’s who of the European architecture scene publicly opposed the Russian war of aggression in a very short space of time at the end of February/beginning of March 2022. Within just a few days, numerous offices expressed their solidarity with the people in Ukraine and with all those who stand for peaceful coexistence – above all via social media. In the case of Chipperfield, HdM, OMA and Zaha Hadid, the public statements were followed by an immediate halt to all construction projects in Russia. BIG also announced in a statement that the office would not be carrying out any projects in Russia or for the Russian government. However, it is not clear from this whether a construction freeze has been imposed or whether there are simply no Russian projects currently in progress.

First the governments, then the private sector. Today, our globalized world also makes it possible for corporations, companies or even planning offices to impose sanctions. So while Apple, Siemens, Starbucks, McDonalds, Coca-Cola, Pepsi and the management consultancies KPMG, PWC, EY and Deloitte are suspending their business in Russia as a result of the war of aggression, or Elon Musk is actively supporting Ukraine with the help of his satellite internet service Starlink, including reception systems, the world of architecture is also drawing its own conclusions. This is worth a special look, as it was or is precisely non-democratic regimes such as Russia or China that have provided the big star offices with unique construction projects in recent years. The M+ Hong Kong designed by HdM only opened at the end of 2021. While at the turn of the year in Moscow, the Renzo Piano Building Workshop RPBW converted the GES-2 power station into a center for visual and performing arts for the V-A-C Art Foundation.

Jacques Herzog on democratic architecture

For us in the editorial team, this immediately (and once again) triggers the question of how political planning can be, but also how political planning must be. What is exciting in this context is that Jacques Herzog in particular has repeatedly publicly addressed the question of democratic architecture. You can think what you like of him and the HdM projects, but he takes a stand. As he did in an interview in 2020 with Lukas Gruntz from architekturbasel.ch. Referring to the historic urban development of St. Petersburg, Venice, Rome and Paris, he said here: “Perhaps more beauty is created in a non-democratic context because the context is more extreme, more radical.” But he also continued: “From our point of view, an enlightened and democratic society, architecture must be anchored in the population and ideally emerge from the needs of the population.” Sentences that should make us think. Now more than ever.

Ukraine war: Coop Himmelb(l)au under pressure over Crimea project

Lighthouse projects in non-democratic regimes must be better considered in future. I wonder what is going through Wolf D. Prix’s head at Coop Himmelb(l)au right now? His office was criticized even before the war of aggression. Since 2020, the Viennese have been planning two of the four cultural buildings that Vladimir Putin wants to be built by 2023. The particularly tricky case is the planned opera house on the Crimean peninsula, which was annexed by Russian occupiers in 2014 in violation of international law(more on this in an SZ-Plus article). With reference to the lighthouse project, Ukrainian President Volodymyr Zelensky imposed economic sanctions against the Viennese architecture firm and six of its representatives on January 21, 2022.

Wolf D. Prix: Coop Himmelb(l)au is building an opera house, not barracks

According to an SZ.de article by Gerhard Matzig, who interviewed Prix on the subject, this was preceded a year and a half ago by threats from the Ukrainian embassy to Coop Himmelb(l)au. Prix would not be allowed to build the opera house in Sevastopol or the architectural firm would soon be ruined. And according to Gerhard Matzig in his article, Prix has now also been advised to distance himself from the project and Putin. When asked by Matzig whether he would do so, Wolf D. Prix sighed on the phone. Prix is of the opinion that he is not building a barracks, but an opera house. As a cultural project, this is not subject to the embargo regulations. Unsurprisingly, as of mid-March 2022, Coop Himmelb(l)au still has no statement on the Ukraine war.

Ukraine war: Russian planners make their mark

But now back to those who openly oppose the war. Because it’s not just the European star offices that are flying the flag. According to SZ.de, a total of 6,500 Russian architects, designers and urban planners also signed an open letter on the website of the Russian architecture magazine “Project Russia” between February 26 and March 4, 2022, calling for an immediate end to the war. The tragedy is that this appeal also fell victim to the “fake news” law against critical reporting on the Russian army signed by Vladimir Putin on March 4, 2022. Only a short version of the campaign with a picture of a dove of peace can now be seen on the site. It says here in Russian: “Unfortunately, we were forced to remove the text of the letter under threat of criminal liability under the law that came into force today. We are for peace!”

One profession, one passion

Meanwhile, however, the Union of Architects of Ukraine also called on the International Union of Architects to expel the Union of Architects of Russia from the organization. “Those who do not condemn Russia’s actions support them,” the Süddeutsche Zeitung quotes the President of the National Union of Architects of Ukraine, Oleksandr Chyzhevsky, as saying in a letter to the UIA. If you let this statement sink in, you have to ask yourself – even if you condemn Russia’s actions in the strongest possible terms – whether we really want to live in a world in which people from one industry, one profession, one passion, go against each other simply because of their nationality. For this very reason, the G+L editorial team would like to join our Russian colleagues: Мы за мир. We are for peace. And we condemn the Russian government’s attack on Ukraine, which violates international law, and stand in solidarity with the Ukrainian people and government.

Ukraine war: bdla and BAK also active

While German landscape architecture firms are still quite reluctant to express their solidarity, the bdla published an official solidarity statement #StandWithUkraine on March 2, 2022. The bdla declared its “deepest regret about the war in Ukraine, the loss of human lives.” It condemns this attack, which violates international law. The bdla’s thoughts are particularly with its colleagues from its partner association, the Guild of Landscape Architects of Ukraine. In the same letter, the bdla refers to the initiative of the Federal Chamber of Architects. This has set itself the goal of becoming active beyond expressions of solidarity. For this reason, the BAK is making its network available to the Ukrainian Association of Architects. The goal: sleeping places for refugees. Find out more here.