Some German fella has made a map of London’s “S-Bahn” network, and it’s glorious

It’s so, so beautiful. Image: U-Bahnfreund/Wikimedia Commons.

An S-Bahn is a type of suburban rail network with a bigger footprint than a traditional metro, which links a city to its outer suburbs and inner commuter towns.

The name is an abbreviation of the German: in various cities across the German-speaking world, you'll find Schnellbahns (“fast trains”), Stadtbahns (“city trains”) or Stadtschnellbahn (“fast city trains”).

The Berlin S-Bahn and U-Bahn map. This will become relevant soon enough. Click to expand.

But you'll also find S-tog systems in the Denmark and Esko systems in the Czech Republic. And while no one tends to call it an S-Bahn, the Parisian RER (“Réseau Express Regionale”) is really another version of the same sort of thing: a regional metro system, with largely segregated tracks, on which a number of suburban branch-lines combine to provide frequent services through the city proper.

London doesn't really have anything quite comparable to this, for reasons I delved into a couple of weeks back. (Short version: north of the river, at least, the Tube tends to play the same role.) But it does have the London Overground, and it's soon to have Crossrail, which are sort of the same thing if you squint.

So on Christmas Eve, a German train fan posting on the RailForums website as U-Bahnfreund (“subway friend”) decided to treat those networks and Thameslink as if they were London's S-Bahn network and draw a map, which he then put it on Wikimedia Commons:

Ooooh. Click to expand. Image: U-Bahnfreund/Wikimedia Commons.

Let’s get the inevitable nerd whinges out of the way first. These services are not all really much like S-Bahns, are they? Crossrail and that first phase of the Overground you can make a case for. But the Overground lines from Liverpool Street, where services are lower and stopping patterns more confusing? That silly branchline between Romford and Upminster?


And then there’s Thameslink, shown here with the vast number of branches it'll have once its apparently endless rebuilding project – once known, hilariously, as Thameslink 2000 – is finally completed. Even if the powers that be resist the urge to change the proposed service pattern for the 179th time, most of those outer branches will see relatively tiny numbers of trains, and several of them serve destinations a quite ludicrously long way form central London (hi, Peterborough). It’s not obvious to me why these services should qualify for S-Bahn status when the more frequent inner suburban routes run by, say, South West Trains shouldn't.

But let's leave the mean-spirited nitpicking aside and look at the actual map because it’s bloody gorgeous. Inspired by the Berlin S-Bahn map (above), it treats the inner ring of orbital Overground services as a box, from which other lines radiate. It places Farringdon, where Thameslink and Crossrail will cross, at its centre (a position roughly occupied by the Hauptbahnhof – main station – on the Berlin map).

Click to expand. Image: U-Bahnfreund/Wikimedia Commons.

It also gives each individual route its own line identity, consisting of a letter (which shows which network it's part of – T, C or O) and a number (which narrows it down further). Similar routes have similar colours, and shortened versions of services end in a five, a sort of digital version of “and a half”. Here's the  complete index:

Click to expand. Image: U-Bahnfreund/Wikimedia Commons.

Dotted lines mean “peak hours only”, incidentally.

It's so well-done, in fact, that I find myself wishing London’s rail network really did work a bit like this. I’m forced to conclude the problem is less the choices that have been made about how to represent the system, than the incoherence of the system itself – that the problem is not the design, but in the actual, real London.

At any rate: this map does at least offer insight into how much tidier London's rail network could look, given a little German rationality and efficiency. U-Bahnfreund, if you're reading, we salute you.

UPDATE, 1700hrs: 

Our mystery map-maker has come forward. He’s called Simon, and he tweets as @SimonSchre.

He messaged me to explain some of the thinking beind the map:

To answer some of your questions: this was really just a holiday project so I did not put *too* much thought into it. I chose these three systems (Thameslink, Overground and Crossrail) as together, they kind of resemble Berlin’s S-Bahn system (S1/2/25/26 north-south, S3/5/7/75/9 east-west and S41/42/45/46/47/8/85 circular), also, it was already hard enough to figure out all the service patterns planned only for Crossrail and Thameslink in 2019, let alone for the entire London rail system (see below though).

Once I picked these three systems, I drew all lines that (will) belong to them, including the Romford-Upminster shuttle, the Overground lines from Liverpool Street, and the outermost branches of Thameslink.

But just like you pointed out, many S-Bahn-like railway lines, especially in South London, are left out, and some of the lines shown do not really qualify for the label (although here in Germany, the S-Bahn brand also becomes increasingly “misused”, with some S-Bahn lines that are diesel, only run every one or two hours etc).

This is why I spent the first days of 2018 unravelling the London suburban railways, as of the 2018 timetable, and came up with a new version of the “S-Bahn” system with 94 individual lines (some are express services though, and there are still some weird stopping patterns or frequencies), with most lines running twice per hour. For example, the Southeastern service from Victoria to Orpington via Beckenham is the S50, or the Northern City line to Moorgate is covered by lines N3 and N4 to Welwyn, Hertford and Letchworth.

I also started drawing a new map for this new version (with a new style) and by February I had all of North London finished – but because I also had a lot to do for school and the South London system is really complicated, I did not continue the map.

Although I appreciate that you like my map, I must say that there are loads of other people who can draw maps much better than me; I even struggle creating a map of the buses in my home city in Germany.

It is perhaps understandable that his full London rail map seems unlikely to see the light of day. Pity, though: I’d like to see someone come up with 94 different colours.

Jonn Elledge is the editor of CityMetric. He is on Twitter as @jonnelledge and on Facebook as JonnElledgeWrites

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Green roofs improve cities – so why don’t all buildings have them?

The green roof at the Kennedy Centre, Washington DC. Image: Getty.

Rooftops covered with grass, vegetable gardens and lush foliage are now a common sight in many cities around the world. More and more private companies and city authorities are investing in green roofs, drawn to their wide-ranging benefits which include savings on energy costs, mitigating the risk from floods, creating habitats for urban wildlife, tackling air pollution and urban heat and even producing food.

A recent report in the UK suggested that the green roof market there is expanding at a rate of 17 per cent each year. The world’s largest rooftop farm will open in Paris in 2020, superseding similar schemes in New York City and Chicago. Stuttgart, in Germany, is thought of as “the green roof capital of Europe”, while Singapore is even installing green roofs on buses.

These increasingly radical urban designs can help cities adapt to the monumental challenges they face, such as access to resources and a lack of green space due to development. But buy-in from city authorities, businesses and other institutions is crucial to ensuring their success – as is research investigating different options to suit the variety of rooftop spaces found in cities.

A growing trend

The UK is relatively new to developing green roofs, and governments and institutions are playing a major role in spreading the practice. London is home to much of the UK’s green roof market, mainly due to forward-thinking policies such as the 2008 London Plan, which paved the way to more than double the area of green roofs in the capital.

Although London has led the way, there are now “living labs” at the Universities of Sheffield and Salford which are helping to establish the precedent elsewhere. The IGNITION project – led by the Greater Manchester Combined Authority – involves the development of a living lab at the University of Salford, with the aim of uncovering ways to convince developers and investors to adopt green roofs.

Ongoing research is showcasing how green roofs can integrate with living walls and sustainable drainage systems on the ground, such as street trees, to better manage water and make the built environment more sustainable.

Research is also demonstrating the social value of green roofs. Doctors are increasingly prescribing time spent gardening outdoors for patients dealiong with anxiety and depression. And research has found that access to even the most basic green spaces can provide a better quality of life for dementia sufferers and help prevent obesity.

An edible roof at Fenway Park, stadium of the Boston Red Sox. Image: Michael Hardman/author provided.

In North America, green roofs have become mainstream, with a wide array of expansive, accessible and food-producing roofs installed in buildings. Again, city leaders and authorities have helped push the movement forward – only recently, San Francisco created a policy requiring new buildings to have green roofs. Toronto has policies dating from the 1990s, encouraging the development of urban farms on rooftops.

These countries also benefit from having newer buildings, which make it easier to install green roofs. Being able to store and distribute water right across the rooftop is crucial to maintaining the plants on any green roof – especially on “edible roofs” which farm fruit and vegetables. And it’s much easier to create this capacity in newer buildings, which can typically hold greater weight, than retro-fit old ones. Having a stronger roof also makes it easier to grow a greater variety of plants, since the soil can be deeper.


The new normal?

For green roofs to become the norm for new developments, there needs to be buy-in from public authorities and private actors. Those responsible for maintaining buildings may have to acquire new skills, such as landscaping, and in some cases volunteers may be needed to help out. Other considerations include installing drainage paths, meeting health and safety requirements and perhaps allowing access for the public, as well as planning restrictions and disruption from regular ativities in and around the buildings during installation.

To convince investors and developers that installing green roofs is worthwhile, economic arguments are still the most important. The term “natural capital” has been developed to explain the economic value of nature; for example, measuring the money saved by installing natural solutions to protect against flood damage, adapt to climate change or help people lead healthier and happier lives.

As the expertise about green roofs grows, official standards have been developed to ensure that they are designed, built and maintained properly, and function well. Improvements in the science and technology underpinning green roof development have also led to new variations on the concept.

For example, “blue roofs” increase the capacity of buildings to hold water over longer periods of time, rather than drain away quickly – crucial in times of heavier rainfall. There are also combinations of green roofs with solar panels, and “brown roofs” which are wilder in nature and maximise biodiversity.

If the trend continues, it could create new jobs and a more vibrant and sustainable local food economy – alongside many other benefits. There are still barriers to overcome, but the evidence so far indicates that green roofs have the potential to transform cities and help them function sustainably long into the future. The success stories need to be studied and replicated elsewhere, to make green, blue, brown and food-producing roofs the norm in cities around the world.

Michael Hardman, Senior Lecturer in Urban Geography, University of Salford and Nick Davies, Research Fellow, University of Salford.

This article is republished from The Conversation under a Creative Commons license. Read the original article.