Doing other researches in the library, I ended up on a book @750V_DC will for sure appreciate:

A compilation of all the trolleybus systems that existed in Italy from early 20th century to today. Image
There were really a lot of systems at the peak (pre and postwar years), including some interurban trolleybus I wasn't aware of, like around Salerno, Verona and in the Valtellina valley (Bormio) ImageImageImage
There are a lot of pictures, including some of the very first generation of trolleybus in the 1900s, mostly around Turin, but also in Siena. ImageImage
Rome had one of the largest trolleybus network, due to the choice of expelling the tramway from the city centre in the 1930s. Today, also the trolleybus is gone... Image
Many nice pics of how, before the diffusion of a strange illness called "wirephobia", the "bifilare" (the double wire) coexisted harmoniously with the historic landscape of Italian cities ImageImageImage
Final pic: a trolleybus/mainline electric crossing :-)
750v DC/ 3kv DC Image

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More from @ChittiMarco

12 Feb
1/ The debate between BRT (rubber based transit) and LRT/Tramway (rail-based transit) is often split around ideological lines. But the reality is that the choice is not so neat and it depends on a number of factors.

An example from the planned green line of Bologna's tramway. ImageImage
2/ It's a short line, in reality a semi-line, the first section of a longer second line.

It is an interesting case because it replaces completely on almost the same corridor an existing frequent bus line (27) that has a 3'-4' headway at peak and 5'-6' during the day Image
3/The average speed of the proposed tramway line is 17.6km/h. Checking the current timetables of line 27, the average speed is almost the same of the current line. That because stop spacing is similar (350-400m), and there are already bus-only lanes on part of the route
Read 22 tweets
11 Feb
Today, it's HSR construction costs day.

The 140km Napoli-Bari AV/AC under construction will costs 5.787 bn€, that is 41m€/km

It's not a full passenger-dedicated HSR, but a mixed traffic line designed for 200km/h max speed, 25t axle load and P/C80 and 750m-long freight trains Image
The interesting thing is that there is a costs subdivision by sections so it's possible to see the variation depending on the area:

The cheapest section is the Cervaro-Bovino 23km section on flat land that is quoted at 263m€, that is 11m€/km Image
The second most expensive one is the 47km Apice-Hirpinia-Orsara, that is 80% in tunnel under the Dauni mountains. It is quoted at 2.242m€, that is 51m€/km Image
Read 7 tweets
9 Feb
1/ Today I'll bring you in a little walk in the "città giardino" of Bologna.

Despite borrowing the name from Howard's Garden City (probably one of the most imitated and most twisted concept in history after pizza), the città giardino bears little resemblance with the original ImageImageImage
2/ For once, Italian garden cities are way more urban in location and in form, with little concession to neo-pastoralist fantasies. Most of the time it's just a appealing foreign label applied to the typical "fin-de-siècle" bourgeois low density neighborhood
3/ The prevailing typology is the "villino", a single family 2-3 stories urban villa with a modest garden on a relatively large lot. Unlike England, and 4in a more Mediterranean fashion, the garden is fenced ImageImageImageImage
Read 7 tweets
9 Jan
1/ Before the world ends, I must finish my series "RAIL TRANSIT TERMINOLOGY". So, here is another episode:

"LIGHT RAIL TRANSIT" or LRT, a special North American typology of rail transit terminology that is, in reality, many things at a time.
2/ A short recap, that most of you already know. LRT came to the US via Canada as an adaptation of the Stadtbahn or pre-metro model, that is, a rail system that uses tramway technology in a range of reserved-to-segregated alignements to improve speed, capacity and reliability
3/The German or Belgian model are different though. There, Stadtbahn/Pre-metro systems were developed out of existing tramway networks in the postwar years, mostly coupling new city-center tunnels with existing reserved RoWs (boulevard medians or out-of-street) in outlying areas
Read 16 tweets
3 Jan
1/ Here we are: the third episode of the holiday limited series : "RAIL TRANSIT TERMINOLOGY"

Today, I will focus on two typologies that are separated by a century but are somehow related: "INTERURBAN TRAMWAYS" and "TRAM-TRAIN", or when the streetcar discover the countryside. ImageImage
2/ Disclaimer: "interurban" describes a wide family of street and off-street rail transit whose technical characteristics are blurred with proper mainline rail. Interurbans are effectively a family of rail transit solutions ranging from out-of-town tramway to "cheap" local rail
3/ The era of interurbans started in the 1880s, first as steam (or even horse) powered local railways with extensive street-running sections. Yet, the real golden-age, as for urban tramways, begun with the electric traction, spurring the 1885-1915 30-year global interurbans' boom ImageImage
Read 21 tweets
28 Dec 20
1/ We all know WHAT are the ingredients of a Frequent "Regional Rail" network. But there is little talk often about the "HOW to get there".

The case of Lombardy is quite interesting as it shows that, no matter how long it takes, what matters is to have a PLAN and stick to it.
2/ I'm doing this thread because I ended up reading a number of documents about how, in a general framework of stagnation or even decrease in regional rail use in Italy in the last two decades, Lombardy doubled its daily rail ridership from 400,000 in 2000 to 800,000 in 2018.
3/ Of course, the most "glittering part", the piece of hard infrastructure that enabled such a stark increase in service is the "passante": a cross-city rail link opened in phases between 1997-2004 that allows for through-running of "suburban" trains
Read 20 tweets

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