Design new cities around cycling to make mothers' lives easier.

My box bike (or bakfiets in Dutch) can go where no pedestrian or vehicle is able to go. It can traverse slopes that would hurt peoples’ ankles if they were walking. It can fit through gaps that vehicles are unable to fit through. It is safe enough and clean enough to be ridden indoors. And it can shrink spaces that anyone in a hurry would find too vast and boring for walking. All this means a unique kind of city can be built around box bikes, and bicycles generally.


Wonderful building types and urban patterns have been conceived that capture the essence of virtually every mode by which humans can move. Walking inspired porticoes, ambulatories—virtually everything. Boating didn’t just give us passenger terminals, but Venice, Gilpin’s key text on the Picturesque, and the twentieth-century genre of the ship building.

Never Built Los Angeles - Pereira and Luckman, Original LAX Scheme, Courtesy LAX Flight Path Learning Center

Flying has given us airports, and Eero Saarinen. (I adore the image above of Pereira and Luckman’s original vision for LAX airport). Train travel gave us George Gilbert Scott’s St. Pancrus Station and is mentioned throughout Ebenezer Howard’s book Garden Cities of Tomorrow. And driving inspired nearly every new building type of the twentieth-century.

The poor old bicycle has really been left out of this history. How many buildings try to capture the essence of two-wheeled human powered movement? The velodrome? The Danish Pavilion at the Shanghai Expo in 2010? There really aren’t many.


It’s nice that Houten and Milton Keynes had bike routes planned from the start, but that hardly makes these examples of bicycle urbanism. The more weighty design constraint in both cases stemmed from the decision to provide access for cars.

It’s also nice that an architectural idiom has appeared in new Dutch and Danish architecture: the giant awning protecting parked bikes near the door. But as cool as that is, I think we can do a lot more!

I want architects and urban designers to take their minds back to when they were children, and the day they realised their mum or their dad was no longer holding the seat of their bike. I want them to imagine that the street or the park where they first rode a bike is like plasticine in their hands, and they’re going to mould the world according to this feeling, that we all can remember, that we have just learned to fly. 


I would like to propose 5 defining characteristics of built space that speaks to this feeling of flying:

  • 1. the ground plane is leaning and contoured in ways that might hurt your ankles if you were walking but which feel wonderful under your tires. You find very few people walking in front of you on this surface.
  • 2. related to point 1, the undulations are helping you speed up and slow down without braking or pedalling harder,
  • 3. the space you are in is quarantined from motorised vehicles;
  • 4. you can find shelter if you need to get out of the sun or the rain, and
  • 5. everything is further apart than if it were designed for the speed of the walker, but not so far apart as things are in districts that are designed for car drivers.

If you’re an empiricist, who needs to relate every new thought to something you have experienced with your senses, you might be struggling to follow all this. “Where are these 5 characteristics in Holland?” you ask. You’ve got to understand, I’m being Rationalistic in the way I am thinking. Rationalists throughout history like Descartes and Plato have maintained that observable models can be a barrier to us using pure reason. From a Rationalistic standpoint, one’s eyes should not be so seduced by what they see in Amsterdam or Copenhagen, that their mind can’t freely imagine a district built especially for cycling. You may need reminding that old cities were built for walking and horses. The bicycles came along later.


Why do we need to imagine a purpose-built bicycling city? It’s not so we can bulldoze old city centres. It’s so we can stop the proliferation of brand new urban districts with race track curbs and basement car parking. These aren’t only being built in developing countries like China and India. Most disappointingly, even Copenhagen has done it! The new district of Orestad, a 15 minute cycle from the centre of town, is being built over enormous garages and has roads designed to go fast on.

Like brownfield redevelopment districts in all post-industrial cities, Orestad began life with a masterplan promising walkable streets with fine-grain permeable edges—a modern reinterpretation of a European old town. I’ve heard a lot of dilettante “urbanists” speaking as though architects need educating in the ways of that model. If only they knew how my generation of architects were raised on that model. During the 70s and 80s you couldn’t open a professional or scholarly journal of architecture or urban design and not find at least 2 articles pouring over some aspect of the European old town. And this was all done so that the european town might be replicated on brownfields. It was even said  (here) that the European old town replaced the machine as the architect’s main inspiration.

So why aren’t places like Orestad being developed according to the theories architects slaved over during those decades? Well, by the time investor confidence peaked in the early 2000s, developers and financiers weren’t interested in boutique in-fill apartment buildings—the basic type which gives historic districts their character.


They wanted to do block-buster developments, because, with size come economies. The cost of lifts, rubbish removal systems, sub stations, landscaping, prototyping and the latest energy saving techniques, are proportionally cheaper when you build hundreds of apartments, not dozens.


These are all plusses to large scale construction, not only for developers, but for apartment buyers as well. However, there is one undeniable minus. The greater the sums of money invested, the more conservative investors become. They have all resorted to a retrograde visions of the good life, predicated on lots of car parking and roads designed to go fast on.

Thankfully, that vision is only man made. It blasted onto the scene with the Futurama exhibition at the 1939 World’s Fair in New York, and was rapidly built in the US after WW2 using a huge one-time surplus their government was anxious to spend. It looked like progress, so was copied all over the world. Nevertheless, it is only new. We’re seeing in city centres with street layouts predating the car, how the vision can be unpicked.


The next frontiers are the urban districts that haven’t been built yet. These are in developing countries, and on our own redundant industrial lands. Can we stop these being planned around cars? I see my work as imparting a vision for urban expansion to rival the one we’ve inherited from the thirties. 

The hardest part is convincing people that there is no hidden force, in nature or heaven, causing car dependent cities to self-replicate. Henri Lefebvre gave us a beautiful term “the production of space” to remind us that cities are artefacts. They’re like the map and the rules of a video game, that somebody made. Every new land subdivision, with streets designed to move cars between buildings, is a mistake, that a culture has made. Aren’t you glad it’s just us, and not nature or god! We have the power to change this.


The 1939 Futurama exhibition obviously had some masterful tricks of persuasion to make the whole world suddenly think they could shift to a car-based model of urbanism. So what were its tricks, and can they be deployed to inspire the next radical shift in our culture? The trick that stands out to me, was the way the Futurama pushed all the right buttons with mothers.


A passage in E.L. Doctorow’s memoir World’s Fair shows the father coming away from the Futurama exhibition feeling skeptical about taxpayers’ money being used to build roads for GM. It was his mother who Doctorow recalls  whispering—so her husband would not overhear—that the Futurama had made her wish for a car.


General Motors sold the car-focused city the same way they sold their cars. They addressed men, fully aware that women are behind most major household decisions.

I suggest we take that tip, and design bike focused architecture and urbanism that promises a more convenient life for a mother than a car city can give her. Let’s begin with a classic scenario: the baby is due for a sleep, mum wants a brisk walk in the park because she’d paranoid about getting fat, and the pantry is empty.


In a car-focused city she can try to put her baby to sleep in a capsule and transfer that capsule between her car, shopping trolley and jogging pram. While hardly a joy, the production of space for the past 60 years does everything to clear a path for her, not only with traffic engineering and car parks near all the jogging tracks, but with architecture that keeps her out of the rain.


Can we design her a city with even greater amenity? In case you nodded off earlier, I’ll remind you that I’m concerned with designing a model to rival the only one currently used to build new urban districts. I’m trying to imagine a bicycle-focused model of building new cities, to replace the car-focused model that will otherwise continue unchallenged.

Well, I wouldn’t be writing if I wasn’t confident that we can do better. I think the most convenient cities of the future for mothers will be the ones that capitalise on the possibility of using bikes inside buildings. If a box bike had retractible casters it could be used as a grocery trolley inside supermarkets.


And if the circulation inside apartment buildings was designed around cargo bikes, a mother could unpack her groceries directly into her pantry.


And if the space between her apartment and supermarket was quarantined from motorised vehicles and designed with the kinds of undulations I asked you to imagine yourself moulding from plasticine if you were a kid, she could get her exercise, and have fun, on her way home with the shopping. Don’t worry about the baby getting plenty of sleep. If you have ever laid one down in a box bike, you will know these things are like a double dose of Phenergan!

Supermarkets and malls are already perfect for riding inside. All we have to do is convince retailers that bikes are not horses and aren’t going to poo on the floor if they let them inside.

The apartment building is the greater architectural challenge. At the moment it makes leaving home on your bike about as natural as washing your hands after the toilet, before the advent of basins in houses.

Last century building design changed to incentivise hand washing. That event greatly reduced infectious disease. This century it would be nice to see building design change to incentivise cycling, to reduce chronic disease.

There’s a building type I would go so far as to claim as an “invention”, the “slip-block”, that I think would make leaving home on your bike as natural as washing your hands after the toilet. It’s just like a slab block only the access corridors on every level are all gently sloping. Coming home tired most people would choose to take the lifts. These go to the high ends of their sloping access corridor so they can roll down to their apartments—wherever those happens to be along the length of their corridors. When they leave their apartment it’s easier to ride down the ramped corridor that eventually brings them down to the ground, than it is to ride back up to the lift. 

Since the lifts get half as much use, and also serve a lot more apartments, the lifts can be doubled up and each made big enough for 5 or 10 bikes.

And to save cyclists braking on their way down, kinetic energy harvesting tiles can be used to help power the building.


Now I’ll admit, the worst case scenario—the upper most floors—could have some very long access corridors to descend.

Render-Slip Block4

And because of that I know naysayers will draw pejorative associations with aerial streets in Northern England or St Louis. They forget government policies, not aerial streets, made these into ghettos. My background is as a public housing architect in Singapore where we did long aerial streets that all worked perfectly fine. The trick is to make an aerial street a defensible and neighbourly place with fresh air and daylight. One way is by punching holes from the side or the top.


Another is to put eyes on the aerial street with fire-rated windows looking out from apartments.

rjjetson - Internal street

Residents will also care more about goings on in a corridor where they have been allowed to park a few bikes. I’m actually imagining parked bikes creating a barrier to protect people walking from people on bikes.


The ultimate aim though is to get bike parking actually inside of apartments.

I met a developer in Boston who insisted there isn’t room for bikes in apartments. He doesn’t understand that the reason his apartments are tiny, is his permissible development envelope is being chewed up with car parking podiums.


The next question is, how can slip blocks be arranged on a site? A good design method is to align all your blocks to maximise sunlight and views, then introduce something like a piazza or avenue to add legibility. So here’s the ultra-rational starting proposition laid over a vacant site in Orestad in Copenhagen.

It’s actually not as bad as it looks. The Avenues are as wide as Park Avenue in New York. The wedge-shapes also mean a lot of apartments have angled views over part of the roof of the opposite block.


Nevertheless, a gateway and a hierarchy of places would make it more legible as a few  of my students showed with this variation:

Other students have been looking at a similar sized site in Singapore, on the docks at the end of an old railway that is now being turned into a greenway—the perfect site for a bicycle oriented development in a country like Singapore, where the roads are treated as a tax revenue source.

No one cares about overshadowing on the equator. Here you want to minimise east and west facing walls, and give apartments a view. Three students looking at this site recently came up with the idea of giant zig-zagging slip blocks, in a bid to reach Singapore’s extraordinary density targets while maximising the number of units with views, and of course giving everyone that encouragement to leave home on their bikes that you would get from a slip-block.

I’ve shown you the slip block, and ways it can be flexed. If you like now, you can imagine the ground floor packed with cafes and owner-operated fruit shops creating a fine grain permeable edge. Throw in some yarn bombing and you have the urban designer’s pat answer.


The problem with that answer, is not many people remember the question. A quick history lesson for you: the discipline of Urban Design started with a conference at Harvard in 1956 aimed at building chance interaction back into cities, and designing defensible space. Since social isolation was attributed to freestanding towers and cars, they naturally saw low in-fill buildings and walking as the solution.


There are some problems with walking though. It doesn’t increase your metabolism like cycling, so has been found to make populations gain weight if that’s all they do. It doesn’t meet the commuting requirements of households with specialised jobs, schools and hobbies. And because it’s so slow, it only lends passive surveillance to a handful of streets, the ones where shops gather tightly to catch pedestrian trade—most streets have no eyes upon them.

In a city where everyone leaves their apartment riding a bike, the logical answer to the problem of chance interaction and passive surveillance is not a cafe strip. The opportunity exists to scatter shops evenly across the whole city or district. Since the slip blocks have ramps reaching the ground every 60meters, these can be treated as activity nodes, with entries to apartments and shops. By raising these nodes you can help cyclists slow down without braking.

If high means slow, then low means go: in other words channels can be used as bicycle expressways leading to whatever linear routes might connect bicycling districts across a post-industrial city.

Bike depth copy 2

Pictured above is 2.2 meter deep channel with a 14% grade rising to activity nodes, and  flyover bridges for pedestrians and slow cyclists.

Cpenhagen RendersFlyover structures can be extended to provide rain cover and shade to cyclists below. This last image shows a proposal employing these principles on the aforementioned Singapore site. Without going into the fine grain detail that would break down the scale of the ground plane, the drawing conveys a basic conceptual strategy of placing building entries and shops on crests and linking these with pedestrian bridges. The lower level, represented by blue, lets cyclists follow their own desire lines on a field singularly designed to capture that feeling of flying we all remember from when we were kids.

I’m taking these ideas to the Netherlands next week. This post is an essay I’ve written to gather my thoughts ahead of those talks. So if you’re planning on coming to Nijmegen on the weekend, or coming to the bike night in Amsterdam, you’ve just been given a chance to ask questions in advance. I would certainly appreciate any feedback, and truly thank you for having just read a 3000 word blog post! Thanks too to the many Masters of Architecture students at the University of Tasmania who have worked with me to refine these ideas! I’ll happily put them in touch with any clients or employers looking for talent!


  1. crank says:

    An excellent appeal. As a committed non-car-owner Dad, I can certainly attest that
    1) shopping is easier with a bike (I don’t schlep across the carpark!)
    2) easier with kids (and dogs)
    3) way more fun
    4) the quickest way around town.
    The only actual inconvenience is the volume of _cars_ trying their best to maneuver their oversized shells about the place. And in the process, scaring more people off bikes, producing our current downward spiral. A car would not make life any more convenient for me.
    Actually, not being able to ride into my house is a minor inconvenience, but I’m thinking about changing that 🙂 It’s a far easier solution than the car-garage.
    I really like your students’ adaptions of the slip-block. Some nice ideas.

  2. Very minor and trivial question here (sorry to be so internetty).
    As a one-time heavy urban walker, (who lives in a very hilly city) what’s all this about walking on slopes hurting your *ankles*? Knees, hmmm well yes, as I get older, but *ankles*?
    [Furrows brow in bewilderment. Do you have particularly weak ankles? Do I have particularly strong ones?]

    • Steven says:

      traversing a slope is a pain, more so in dress shoes, and certainly in heels (which I have tried a few times).

  3. Jim says:

    The one thing I love about cycling is I can ride anywhere. I’m not confined to paths and roads like other modes of transport. There’s just something satisfying about getting from suburb to cbd via three short cuts, one involving a 1.8 metre high fence and another involving a creek crossing.
    I really do stop and wonder why so many cyclist find it necessary to ride on paths and roads when it is so much easier, quicker and exhilarating to make ones own path through the cities.

  4. Luke says:

    I *think* those streets in the sky in t’North were very popular to begin with (warning- I am a southerner and don’t know anyone who lived in them in early days).

  5. Edward says:

    Finally got around to reading this in full. Great essay. Like crank, I really like what your students did to the slip block. Good luck in Nijmegen.

  6. tk says:

    I suspect that at some point the SG govt will turn the former railway green corridor ‘back’ into a high speed rail link with ML, Thailand and thencly PRC. They at least must be thinking about it, or else they would have opened the whole 24km up for development as soon as ML sold it back to them. Under no pretensions about my (and the Nature Society’s) lobbying prowess 😉
    But hey, riding down a slip block on to a train at Tanjong Pagar and then rolling off at Beijing would be pretty cool.

  7. Colin says:

    So developers didn’t get on board with architect’s vision of pedestrian-oriented old-style designs. Why do you think cycling-oriented designs will have a better chance? Seems a bigger stretch to me.
    But the bigger question is whether your goal is desirable. We’ve already had half a century of urban design that has excluded walking, and you want more of it! (Albeit optimised for a different sort of vehicle.)

    • Steven says:

      Thanks Colin! You’re right, there’s a fat chance I’ll see these ideas realised in Australia. That’s why I’m working more with our visionary friends in the Netherlands, to whom Asia looks for development models. For now though, Australia provides a good base with spirited interlocutors such as yourself 🙂 This nation’s conservatism and naysaying serves it well, for the moment at least. Honestly, don’t become like them.

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