Category Archives: Bike Share

Bikeshare 100

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This is the presentation I gave at the Velo-City 2013 conference last week – I’m uploading it here as quite a few people have asked for it. The PDF contains my whole talk, except for some graphics from a couple of forthcoming papers which haven’t been published yet, and a conceptual image from a paper that we haven’t even started doing the research for yet!

The paper includes an introduction to EUNOIA, which is my main research project. Bikesharing data will form a small but useful part of this two-year EU transport mobility modelling project.

Here is the PDF of the presentation.

At time of presenting last week I was monitoring 85 cities live, since then I’ve added quite a few more (and dropped a couple) so I am now at 98 cities!

The new cities are:

Castellon and Leon were particular headaches, as they don’t have an official live map with location data – so I had to use a combination of third-party location data and manual georeferencing the newer locations! Oxford is also the first system where there are not a fixed number of docks. Implementing this on my map was a bit of a kludge. I’ve assumed that there are always more docks than bikes there, with a minimum 10 docks at each docking station.

Fixed cities are:

I’ve also switched the Mexico City feed to using the citybik.es service.

Dropped cities include Pavia (too small) and Stockholm East (too small). Nantong and Guadalajara have also been put on hold as their feeds have frozen for the last few days.

Cities I’m hoping to add very shortly are:

  • Portugal: Torres Vedras (launches 22 June)
  • France: Clermont-Ferrand (launches 27 June)
  • USA: Chicago (launches 28 June)

So Chicago’s DivvyBikes could well be the 100th system I’m tracking – and my presentation title will be valid!

You can see all the cities I’m tracking on the global view of my Bike Sharing Map – I also took the opportunity at the conference to launch this new, consolidated view.

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High quality lithographic prints of London data, designed by Oliver O'Brien

Velo-City 2013 Review

I was at Velo-City 2013 (a major urban cycling trade conference) in Vienna last Thursday, to present my latest work on the Bike Share Map, EUNOIA’s link to bikesharing, and a CASA research paper update. It was great to be able to attend the conference for free, thanks to winning a ticket in the raffle at last year’s Velo-City in Vancouver.

My paper was presented as the last of four talks, specifically on bikesharing, in the mid-morning session. Despite the session venue being hidden away catacombs deep underneath Vienna City Hall, the room was full with an audience of around 100.

First up was Albert Asséraf of JCDecaux, talking about the history of JCDecaux-built bikesharing systems, staring with Vienna itself 10 years ago:

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The talk focused on Paris which is as large as the other JCDecaux systems put together:

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…although London is closer than the top statistic suggests – London’s, at 8100 bikes, is ~44% of Paris’s 18300 (and London is set to get another ~2000 in the next 6-9 months).

Next up was Hans Dechant, talking about Citybike Wien. The Viennese system is one of Europe’s cheapest – after a 1 EUR one-time verification charge, it’s completely free, as long as journeys are under an hour. It was important to structure charges for longer rentals on a progressively steeper scale, so that bikesharing doesn’t complete directly with daily and longer hires from the established bicycle rental firms:

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The talk also highlighted the intensification (increased density of docking stations) that has taken place in the Viennese system over the last couple of years, moving it to be more in line with other large systems across the world:

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There was also discussion of the automatic maintenance system, where bikes are locked in the system to be picked up for preemptive maintenance, after they have done a certain number of journeys or if they haven’t been used for a long time, even if the users haven’t flagged issues on the bikes.

The third talk, by several people, was on the soon-to-be-launched, but much delayed, Budapest “Bubi Bikes” bikesharing system, now likely to appear in summer 2014 – they are just moving to tender now. The system will be 85% funded by a European Union grant. Trip analysis has been performed to identify the areas of the city most likely to be used for bicycle trips and therefore define the system boundaries – mainly on the east side of the river.

Finally, I was on, and talked about the link between my main project (EUNOIA) and bikesharing:

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I also launched a new global view of my Bike Share Map:

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Finally I touched on some ongoing and potential CASA research into bikesharing, including one possible project we are considering studying the spatial analysis of individual users in London:

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One metric that all three of the previous speakers in the session had mentioned was the average distance between docking stations – it is clearly one which is therefore valued by operators and city/transport authorities, so I included some results of a spatial analysis of bikesharing systems – including docking station density – in the talk.

(I’ll aim to upload most of the slides from my talk in the next few days.)

After the session there were two further main sessions on the day – the first being a round table and the second a “speed date” – in both cases, interested parties gathered around a table in the room and the speaker gave a 10-15 minute talk on their project, then people moved to another table and the talks were repeated. It was a good, lively format – the speed date in particular had 91 tables and 7 “slots” and so I was able to learn about projects as interesting as NextBike‘s technology, the ScratchBikes system (Newcastle) which, via their new Grand Scheme brand, is coming to Headington (Oxford) as OxonBike, a wearable cycle light that changes colour/intensity when turning or braking, and an ambitious project to build a cycleway on the east side of Manhattan – which includes blocking off part of the East River and building a power station underneath a new lake!

As well as the talks there were various opportunities to see trade stands – one thing that struck me was the number of companies now offering bike sharing systems. While my research focus has been on the large, “heavyweight” systems that offer many docks and so present many interesting opportunities for spatial analysis, it is clear that there is a large additional movement towards small-scale, cheap systems which can add this new form of public transport system to an urban area of any size.

One regret from the conference was that there was little presence from cycle companies or operators in the Far East. I would loved to have learnt more about the systems and technologies being used there, but Velo-City 2012 proved to have more coverage from Asia.

I had to leave for my plane as the final event of the day was getting underway – a mass cycle parade using bikeshare bikes and various other borrowed bicycles, around Vienna. Various streets were getting blocked off by the police for the event as I headed towards my bus. The benefit of having a conference organised by the city authorities!

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High quality lithographic prints of London data, designed by Oliver O'Brien

The Top 20 World Bikeshare Cities*

With NYC’s big bikeshare launching on Monday, it’s time to update my list of the world’s biggest systems.

* I’m only including the systems where there is publically accessible live (or near-live) data on the number of bikes available for use. This means that most of the large Chinese systems don’t appear – accurate and up-to-date numbers for many of them are hard to obtain, as they either never had live online maps, or, in several cases, the live running information from them has been recently removed. If they were included, and the data from press releases, news articles and other research sources were accurate, then Chinese systems would make up 17 of the top 20, including the top 4.

The Biggest Bike Sharing Cities with Live Bike Numbers (May 2013)

City Country Data Bikes
May 2011
Bikes
May 2012
Bikes
May 2013
1 Paris** France API 17875 (Dec) 18135+ 18380
2 London Great Britain API 4886 6603+ 8128+
3 New York USA Data* 4683
4 Barcelona Spain API 4993 4482 4303
5 Montreal Canada Data 4309 3943 3954
6 Zhongshan China Data n/a 2491 (Jun) 3919+
7 Brussels Belgium API 1833 (Jun) 2494+ 3723+
8 Lyon France API 3063 (Oct10) 3318+ 3411+
9 Mexico City Mexico Map 1129 1149 3408+
10 Milan Italy Map 1315 1559+ 2681+
11 Changwon South Korea Map n/a 2010 (Jun) 2527+
12 Valencia Spain API 2278 (Dec) 2444+ 2495
13 Nantong China Map n/a n/a 2487 (Jun)
14 Seville Spain API 1941 (Oct10) n/a 2312+
15 Toulouse France API n/a n/a 2091
16 Lille/Tourcoing France API 711 (Sep) 1336+ 1967+
17 Washington DC/Arlington USA Data 918 1402+ 1902+
18 Brisbane Australia 3P 1018 1623+ 1883+
19 Nice France Data 784 (Nov) 1361+ 1400
20 Minneapolis/St Paul USA Data 605 977+ 1392+
21 Taipei City Taiwan Data 336 (Jul) 310 (Mar) 1374+
22 Kaohsiung Taiwan Map n/a 992 (Jul) 1312+

The numbers are coming generally from the monthly recorded max from my Bike Share Map.
* API anticipated appearing soon.
** Not including 400 bikes from a couple of separate systems on the outskirts.

Anecdotal evidence suggests that some “official” information releases overstate the numbers of bikes available – operators may consider bikes that are in docks but broken, in a workshop for repair, or in redistribution vans, to be available for use, whereas I’m counting the maximum recent number of bikes available in docks for people to use at a particular instant. So, for consistency, I’m sticking to the raw statistics that I can see, for the list here.

(I know there’s 22, not 20. I initially missed out Taipei City by mistake, then didn’t have the heart to move out Kaohsiung. Then I found a new datasource for Nantong.)

NYC’s Bikeshare is Almost Here

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Not long now – less than a month – until the 1 May launch of New York City’s long-awaited and delayed (the hurricane last year didn’t help) bikeshare system, Citi Bike. Stations are starting to be rolled out.

A pilot test is currently being run with some docking stations and bikes, in the Navy Yard area of Brooklyn. I’ve discovered the live data feed for these stations, and combined it with the “planned stations” data feed, to produce a map of the system as it stands, which I’ve added to my Bike Share Map. The live docking stations are in blue/red colours, depending on how full of bikes they currently are, while the planned stations are in grey – dark grey for Phase 1 (launching in May), and light grey for Phase 2 (later this year). The rollout is happened in two phases due to damage inflicted on some of the warehoused bikes caused by the flooding from Hurricane Sandy late last year. Disasters like that kind of put the occasional complaints about the London’s own system into perspective!

London and New York share a common base design for both the bikes and docking stations, so in theory if you were to fly a Boris Bike to NY, it would fit in a dock’s slot – although I presume the system would then reject it for having an alien ID! Both cities’ docking stations and bikes have had design modifications from the Montreal BIXI original, with London’s docking stations being concreted in to the ground while NY’s docking stations have a solar “tower” for power, and a credit-card shaped slot as well as the normal key slot, for future integration with transport smartcards.

One of the most promising parts of the Citi Bike website is the System Data tab – right there on the front page. This looks like NYC will potentially be joining London, Minneapolis, Washington DC and Boston (and possibly Paris soon) in making anonymous journey data available to anyone who wants to analyse it.

Incidentally I’m delighted to see that the NYC system has an official blog and it looks like it’s not alone, with the largest non-Chinese system in the world, Paris, also having an official blog. Come on London, get blogging!

The London Bike Share Marches North

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It’s not just Wandsworth and Fulham that will be getting Barclays Cycle Hire in the next year or so when Phase 3 goes live – Hackney and Islington will be getting a few too. The iconic “Boris Bikes” will be heading up Mare Street towards central Hackney – although not quite getting there – plus there’ll be various new docking stations in Haggerston, just north of the Regent’s Canal. There will also be a docking station on Islington Green, and a few around the Canal Museum on Calendonian Road. In all, if planning permission is forthcoming, there will be up to 15 new docking stations, all north of the Regent’s Canal. It’s a modest increase – 3% – but the communities affected will doubtless enjoy the new facility. It’s still a long way south from myself though!

I’ve adapted my Bike Share Map to show the proposed locations, above. The potential docking stations appear in green.

It’s great to see that the system is continuing to expand in all directions – but now the central London demand is being sated, it would be nice if Transport for London relaxed their requirement for docking stations to be within 300m of each other. The most successful bike share systems generally have a dense core and a well spaced out periphery, which accommodates commuters, tourists and locals equally well. I would much rather have the system properly penetrating Zone 2 and 3, even if there’s a 1km gap between each docking station. Then it becomes more useful for the utility users who unlike the commuters (going from stations to skyscrapers) and tourists (concentrating on the bigs parks and markets) act as useful re-distributors in their own right by the nature of their diverse journey directions.

Thanks to Loving Dalston for spotting a planning application for the docking station by London Fields. I had a quick trawl through the Hackney and Islington council planning websites to spot the others.

Paris Workshop on Bike Sharing Systems

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I attended a one-day workshop last week, hosted by IFSTTAR’s GERI Animatic research group at École des Ponts ParisTech just east of Paris. The workshop was on Bicycle Sharing Systems, and as I have recently been working with a couple of colleagues, Dr Martin Zaltz-Austwick and Dr James Cheshire, on research relating to bicycle sharing data, and mapping the systems currently live in various cities around the world, I was keen to attend, particular as the agenda was packed with interesting sounding talks.

My rush-hour commute through Paris proved to be slightly more traumatic than planned (I wonder if Parisian visitors find London Underground stations as confusing as I find those on the Paris metro?) but I arrived at the École des Ponts ParisTech in time to hear the workshop organiser introducing the sessions. First up was Pierre Borgnat talking about network analysis of Lyon’s system. I had seen a paper by him on Lyon before, and the popularity and density of Lyon’s system has allowed for a rich and interesting dataset for mining and community detection. The community detection has been done using both spatial and temporal variables. Pierre’s thorough and technical treatment of the data was backed up with some excellent mapping of the data, which you can see above and below.

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Next up was Jon Froehlich. Jon’s talk was underpinned by a discussion of the different data sources and types available in the field. He focussed on temporal cluster analysis of the Barcelona bicycle sharing system (below) – a particularly interesting city for me as, along with London and Zurich, it is a case study for the EU project I have recently started working on, EUNOIA. Barcelona’s bicycle sharing system is not unlike London’s, in terms of its size, shape and usage characteristics – although the general downward slope of the city causes headaches for its operator. Jon gets bonus points for including not only a quote from this blog on his presentation, but Martin’s beautiful routed bike-flow animation for London, and Dr Jo Wood’s more recent bi-directional flow animation, again of London.

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Etienne Côme, from the hosting school, was next on, with an analysis of the biggest system (outside of China) of all – the Vélib in Paris. The Vélib is perhaps the holy grail of academic research in the field as its size, and Paris’s multiple commercial and residential zones, means that community and network analysis is likely to be eye-opening. Similar to Pierre, Etienne outlined eight detected communities, by looking at temporal variations in the origin-matrix between the 1200-odd stations on the Vélib network.

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After lunch, Vincent Aguilera was first on, with a switch away from bicycle sharing systems but showing some techniques that have potential for the field – Vincent looked at using mobile phone network data to detect station dwell times and true journey durations on a section of the RER metro in Paris. He compared this data with Twitter messages with appropriate hashtags (below), and the real-time running supplied by the operator on its website. The availability and structure of the cell-towers on the network allowed a direct comparison to be made – indeed, such data may actually be of better quality than that currently available at the operator’s disposal, allowing more fine-tuned operation and monitoring.

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Neal Lathia was next with a look at London’s system – specially effects caused by the addition of casual (i.e. non-key, non-member) availability in December 2010. The additional option did see some changes in the usages of certain docking stations. The comparison was done by clustering the network’s docking stations by time, before and after the transition, and then seeing which stations changed cluster. One of the main areas of change was in the very heart of London, around the Trafalgar Square area, suggesting a slight shift away from the (still dominating) railway station-based usage patterns.

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Fabio Pinelli’s talk was wide-ranging – it included system design, routing for Dublin’s (over)used system, a look at the reliability of the Vélib fleet.

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Finally, Francis Papon from the hosting school took a step back from the modern electronically managed bicycle sharing systems and mobile/social data sources, and looked at change in uses of urban cycling more generally. His dataset stretched over a hundred years, rather than the typically five-year maximum historical range that bicycle sharing systems have. A key trend is that in the largest French cities studied, including Paris, there is a recent (post-2000) renaissance in urban cycling usage, but this is not matched in many of the country’s smaller cities.

The workshop concluded with a general discussion of the research field to date and its direction. What was particularly interesting was that several bike sharing operators were in attendance, they were fully engaged with the academic research being carried out, asking questions but also revealing some nuggets of information about how the systems are rebalanced, relative costs of operations and why they thought some systems were more successful than others.

Hopefully there will be more such workshops in the future in Europe – with UCL CASA, Cambridge, City University London and LSHTM all involved in the field, maybe there should be one taking place in London next year?

Bike Share Operators and Social Media – User Engagement with Twitter

Many of the bike share operators whose systems I’ve mapped have accounts on Twitter – but do they use them to reply to customers, notify of system changes, or just tweet promotional measures? Have they built up an appropriately large set of followers? Do they tweet often? An active Twitter account is good customer service, one that replies to queries is great customer service! (N.B. Google has translated the Velib conversation above from French.)

There are 24 operators, for which I able to find a relevant Twitter account. The following table shows how they use it. This does of course leave several hundred other operators (many very small) for whom I could not find an account.

City System Name Size (Bikes) Twitter Account Foll-owers Repl-ies Bad News Score
Mexico City Ecobici 1100 @ecobici 21475 Yes Yes *****
Miami Beach DecoBike 540 @DecoBike 10321^ Yes No ****
London Barclays Cycle Hire 6300 @BarclaysCycle 6673 No Yes ***
Washington DC/Arlington Capital Bikeshare 1400 @bikeshare 5374 Yes Yes *****
Denver B-Cycle 400 @Denver_Bcycle 4652 No Yes ***
Minneapolis Nice Ride 1230 @niceridemn 4100 Yes Yes *****
Paris Velib 15700 @Velib_Paris 3094 Yes Yes ****
Boston Hubway 700 @hubway 3741 Yes Yes *****
Montreal BIXI 4300 @BIXImontreal 3214 Yes Yes ****
Toronto BIXI 820 @BIXItoronto 2801 Yes Yes ****
Barcelona Bicing 3800 @bicing 2358 Yes Yes ****
Boulder B-Cycle 120 @Boulder_Bcycle 1541 Yes Yes *****
Lille V’Lille 1550 @transpole_actu 1322^^ Yes Yes ***
Bordeaux VCub 1300 @tbc 1118^^ No No *
Melbourne Melbourne Bike Share 550 @MelbBikeShare 1095 No No ***
Chattanooga Bike Chattanooga 230 @BikeChattanooga 672 Yes No ****
Kansas City B-Cycle 80 @BikeShareKC 608 No Yes ****
Broward County B-Cycle 150 @browardbcycle 498 Yes No ****
Rennes Le Velo Star 630 @levelostar 384 Yes Yes ***
San Antonio B-Cycle 200 @SA_Bcycle 323 No Yes ****
Madison B-Cycle 220 @Madison_Bcycle 319 No Yes ****
Tel-Aviv Tel-o-fun 860 @tel_o_fun 226 Yes Yes ***
Brussels Villo 3100 @Villo_brussels 152 No Yes **
Ottawa Capitale 230 @capitalbixi 145 Yes Yes ***

^ = Account also handles smaller bike share systems in other cities.
^^ = Account also handles other public transport in the city.

Operators get a star for being on Twitter, another for having more followers than bikes on the street, another for replying directly to at least some user queries on Twitter, another for tweeting and least some system issues and other “bad news”, and another for having made at least a couple of tweets in the last 48 hours.

Large (500+ bike) systems with no active official Twitter account that appear on bikes.oobrien.com: Brisbane, Luxembourg City, Lyon, Milan, Nice, Saragossa, Valencia and Vienna. Not including Chinese or South Korea systems as Twitter appears to not be widely adopted in these countries, at least in terms of official transport accounts. Metrics were measured on 21 August 2012.

Velo-City Review

I was in Vancouver at the end of June for the Velo-City conference – which is the cycling industry’s conference on bike sharing and urban cycling.

The lead sponsors were PBSC who are behind the technology for many of the larger North American systems (Montreal, Minneapolis, Washington DC) so there was was a strong bike sharing theme through the conference, and they had a prominent stand with bikes in the various scheme liveries. The stand also had a couple of design updates from the ones you see in London and elsewhere – a “totem-pole” for capturing sunlight to provide power, and a slots that takes credit cards as well as the existing key-fobs. There is no indication that these updates will be making it to London anytime soon though. B-Cycle, who supply and run many of the smaller systems in the US (e.g. Denver, San Antonio) also had a stand with their own Trek-built bikes, which have a distinctly different look.

I presented on my Bike Sharing Map showing the detail for various cities around the world, it was the middle part of a 90 minute presentation at three geographical scales – the first segment given by Russell Meddin on his global map of bike shares, and the last segment being given by Andrea Beatty on detailed information available for a single city through mobile apps.

I also sat in on several other presentations – some of the most interesting being given by far-eastern presenters, particularly the Chinese. This is because China has 7 of the largest 10 bike sharing systems in the whole world, but getting information on them can be difficult, so it was interesting to find out the information from people on the ground.

One of the most interesting talks focused on the modal shift in Chinese and Western cities – many of the former are shifting from bicycle to car, while the rise of the bus in Western cities was cited by the contrast between Thatcher’s 1968 “A man who, beyond the age of 26, finds himself on a bus can count himself a failure” with the 2008 appearance of a red London bus in Beijing during the 2008 Olympics closing ceremony! In China, lanes that were once dedicated for bicycles have been turned over to extra space for cars.

My personal highlight was being able to borrow one of the PBSC bikes and take it for a spin around Stanley Park – a lovely circuit and on a very pleasant afternoon. Apparently Vancouver does not have very many rain free days in the summer, but it was warm and sunny throughout my stay.

Vancouver is itself getting a bike sharing system, probably next summer. Vancouver’s existing cycle insfrastructure is brilliant – properly segregated cycle lane, with planters and cycle parking to separate the lanes from the cars. The operator will have its work cut out for the scheme to be a success though – helmets are required by law in Vancouver. There was some talk of a system where every docking station comes with a helmet vending machine, and on return the helmet gets safety-checked and automatically cleaned ready for the next user.

Thanks to Russell and Paul for letting me crash in the apartment they rented, B-Cycle for covering my conference fee, and CASA for flying me there.

How to “Boris Bike” to the Olympic Park

Yes! It is possible! There may not be any Barclays Cycle Hire docking stations in the Olympic Park itself, possibly due to “Barclays” not being the official financial services provider of the Olympics but more likely because of the logistics of rebalancing flows to/from major events and the safety aspects of a crowded space, but that doesn’t mean you cannot “Boris Bike” to near the edge of the park. Even better, you get to use one of the two quieter entrances to the park, avoiding the huge queues and crowd mechanics of the approach from Stratford through Westfield.

The above map is adapted from my live docking station map and shows the nearest docking stations to these two park entrances. Cycle to these docking stations, leave the bike at one of them, and then follow the arrows to walk the final kilometre or so.

  • Victoria Gate (west entrance). The docking stations on Old Ford Road and Roman Road are not far away, and these generally have plenty of spaces during the day, filling up in the evening as commuters return home – so if you are journeying to them to visit the park, you have a good chance of finding a free space, and similarly there should be bikes for you to hire on your return in the evening.
  • Greenway Gate (south entrance). This is the route for people walking from West Ham station – but this is a long walk, and you might as well walk from the nearest Barclays Cycle Hire docking stations which are about the same distance away – on Bow Road and Bromley High Street. However you do have to cross the notoriously unpleasant Bow Roundabout, which has no pedestrian crossings, to be able to pass along Stratford High Street. Also, these docking stations have generally been full during the day, for recent days, suggesting some are already using this route.

Both entrances are likely to be quick ways into and out from the park. If you have your own bike, there is a large secure cycle park in Victoria Park, from where you can walk to Victoria Gate.

There are several Olympic venues in Central London, which can therefore also be approached by Barclays Cycle Hire bikes, but be warned TfL is removing the docking stations that are very near, or inside, the venues themselves. A full list is here.

Background map based on OpenStreetMap data and designed by The Guardian.

Velo-City Preview

[Updated] I’ll be presenting at Velo-City in Vancouver later this week. Velo-City is the “world’s premier cycling planning conference”. It is likely to have a significant bike-sharing flavour – the lead sponsor being PBSC which designed the 6000-odd “Boris Bikes” (aka Barclays Cycle Hire bikes) that are a distinctive sight in central London, as well as equivalent systems in Montreal, Washington DC, Minneapolis, Boston and (shortly) New York City – known generically as Bixi bikes. Vancouver does not have a bike-sharing system of its own, but PBSC have imported a whole load of their Montreal bikes for delegates to borrow for the week, although a recent collar-bone break means I unfortunately won’t be taking up the offer. I did however spot a PBSC/Bixi bike “in the wild” in Vancouver’s beautiful Stanley Park – see above.

I’ll be talking about some new insights into bike-sharing cities worldwide that have been revealed by my Bike Share Map, as part of a three-part presentation on looking at bike-sharing cities at different scales – my co-presenters being the author of the Bike Sharing World Map, and the software developer behind the B-Cycle bike sharing systems.

My presentation is on Wednesday morning (Pacific time) and I’ll write/tweet about it on the day, wifi-access permitting.

To prepare for the presentation, I’ve added a few new cities to the Bike Share Map: Suzhou, Zhongshan, Wujiang, Shaoxing and Heihe in China; and Kanazawa in Japan. One early insight coming from these new maps could be that the Chinese really do work hard (if you excuse the gross overgeneralisation) – typically 11 hours between morning and evening commuter peaks, and seven days a week!

Hehei is shown below – it’s right on the Russian border, opposite a much larger Russian city – hence the Cyrillic (although no bridges across the river near there!)

Note that, in the maps of the Chinese systems, the docking station locations are slightly misaligned with the background maps because of location obfuscation carried out by that country – I’m using OpenLayers rather than the Chinese-based map service that corrects for the errors. The resulting offset is typically only 1-400m though so you can still get a good idea of the shape and size of each system.