1/ This is a short, mostly visual thread about a great piece of urbanism: Turin's multiway boulevards.

πŸ’πŸŒ³πŸš²πŸŒ³πŸšŠπŸš˜πŸš˜πŸšŠπŸŒ³πŸš²πŸš™πŸŒ³πŸ«
2/ multiway boulevards are one of the most interesting invention of 19th c. city planning, a first attempt to create thoroughfares to facilitate circulation in growing "paleo-technic" metropolis

In Italy, Turin is the city that designed its growth around them more than any other
3/ taking various shapes, width and configurations, most of them have an important feature: planted medians sepatarating through traffic of trams/cars from side local acces lanes intended for local slow traffic, parking.
4/ one of the most interesting is Corso Francia, a very long straight line connecting the city center with the distant Rivoli castle. Baroque Le NΓ΄tre-sque large scale landscape at its peak.5
5/ despite its monumental lenght, corso Francia has a very nice, intimate neighborhood street feeling, especially the section redesigned after the construction of the metro line that run under it.
A greened median separtes the 2-lane*dir carriageways
6/ the tree-lined medians are used for parking and other functions as bike racks or bus stops, accessible from the side access roads, where speed is limited to 20km/h + a slightly raised bike lane and large stone paved sidewalk protected with bollards
7/ side streets intersections with access lanes are treated with traffic calming features like raised intersections, pavings and other safety design features
8/ metro access are simple and well integrated into the street design, with safe raised crossing across the central car lanes at main squares and other nice fixtures.
9/ tree canopy is so ubiquitous and pleasant that one forgets about architecture: all kinds of buildings spanning more than 100 years integrates without much contrast or "harm to the neighborhood character"...
10/ The outer section of corso Francia didn't get the same treatment (no $$$) and it shows (more cars, narrower sidewalks).

Other boulevards are too wide, like the one built atop the passante city rail tunnel, and it feels like a slightly nicer urban freeway with coll lights.
11/ multiway boulevards are a good element of design for modern cities and north-american urbanism knows them already quite well, see Allan Jacobs's "The Boulevards Book".

But remember that it's hard to get them right by design and that the Devil is in the details.

β€’ β€’ β€’

Missing some Tweet in this thread? You can try to force a refresh
γ€€

Keep Current with Marco Chitti

Marco Chitti Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @ChittiMarco

8 Jun
1/ A while ago I promised to write a thread about why zoning is not the only (maybe not even the main) obstacle between us and the 15-minutes city, starting from my grandmother "latteria".

Today I deliver : a thread about commerce, logistic and city planning. Image
2/ Let's first start with Granma's Latteria, that she opened in 1959. It was a small neighborhood shop, technically a "milk shop", but more of a small grocery + cheese shop + bar in a secondary residential street within a small cluster (tobacco, butcher and vegetable shop) Image
3/ It was a typical family business, run primarily by nonna Giovanna with occasional help from grandpa during weekends and by my father and my aunt after school, especially for home deliveries by foot or bike

Quite the typical portrait of a neighborhood shop in the postwar years
Read 23 tweets
18 May
1/ QuΓ©bec just announced it is going to pour $10bn and counting in a what is now called the RΓ©seau Express de la Capitale.
- $3.3bn will go toward the tramway project (20km)
- $6-7bn toward a 8km road tunnel (with bus lanes...)
- $600m for bus lanes and other improvements
2/ The tramway project is more or less the same announced a few years ago, albeit with a different Eastern terminus.
Unfortunately, the project lost the rest of the "RΓ©seau Structurant" network it was part of, that comprised BRT, bus lanes too. But budget remained the same...
3/ $3.3bn for 20 km makes it $165m/km, one of the costliest tramways in history.

The average cost for Modern European Tramways QuΓ©bec one is modeled from is around €30-40m/km
-> $50-70m/km

The short central tunnel section alone does not justify that astronomical budget, IMO
Read 7 tweets
7 May
1/ I've always been persuaded that most policymakers have little understanding of the spatial implications of their policies. That because policymaking is mostly dominated by discursive and econometric logics.

An example? Electric cars charging stations.

I will explain why
2/ With the next generation EU and Biden's infrastructure plan taking shape, the economic and environmental opportunities and trade-offs of electrifying cars have been discussed a lot in the public debate. Important resources have been committed to expand charging infrastructure
3/ But beyond energy and economy, there is an impact that has almost not been mentioned: where will this charging station be actually built? They won't exist in theory, out of our Euclidean space. They will need to make their space in a congested urban environment.
Read 8 tweets
6 May
One of Bari's suburban rails owned by FSE (Ferrovie del Sud-Est) has been finally completely wired and provided with SCMT (Positive Train Control). The new timetable is now a perfect 30 minutes clockface, albeit limited to a 5AM-9:30PM operation. It's a single track line ImageImage
We tend to overlook Puglia in the national transit discourse, but it's probably the only southern region outside Campania that has a decent transit network, an urban form conducive for transit (dense, compact towns) and actually invested in more service, not only new infra
The result is that Puglia is the only southern region that has seen a steady ridership increase in its local rail network: from 108k/day in 2011 to 150k/day in 2019 (+40%) while Sicily, a much larger region, is stuck at 45k/day and Campania plummeted by 44%, losing 200k/day Image
Read 5 tweets
4 May
1/ I see a lot of "terminological confusion" under the sun, when we talk about train service, especially in a cross-Atlantic comparative perspective
So, I did a quick, and uncomplete, chart to help us all talk about that more clearly.

Here it is, with a short explanation thread
2/ A topology of rail service is a complicate task, because rail services exists in a spectrum and not in watertight categories. But using the average speed/average station distance metrics we can identify a few large clusters of rail service types
3/ Starting from the bottom-left, we have the large family of suburban/regional rail service. Those are rail services targeting the daily mobility needs of an urban region, from commuting to everything else. Their average speed is relatively low and stop spacing close (<10km)
Read 12 tweets
4 May
Thanks to @BrendanDawe I discovered the Atlas of the French rail network published yearly by SNCF-RΓ©seau (formerly RFF). There are a few interesting graphics about regional rail service intensity

Here is Paris (No RER A and B because RATP is another planet, not worth mapping :-)
Here is the whole country. France outside the Î-d-F confirms to be a bunch of provincial capital surrounded by the Great Nothingness :-P

And, of course, "La diagonal du vide (ferroviaire)"

Please note traffic generated by commuting to Luxembourg from the Meuse area (Metz/Nancy)
On the freight side, I'm surprised by the little numbers of daily trains. But I admit that freight is not my stuff, so I don't really know how these numbers compare to other corridors in EU or outside.
Read 4 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!

:(