Showing posts with label turbo-roundabouts. Show all posts
Showing posts with label turbo-roundabouts. Show all posts

Friday, 12 June 2015

The Slow-Turbo Roundabout. A promising new Dutch roundabout design and why you should NOT copy it

A few days ago a new Dutch "slow turbo" roundabout design appeared in images on Twitter. Ordinarily, turbo roundabouts are used in the Netherlands to deal with large volumes of high speed motor vehicles in locations such as motorway junctions, which are rarely visible to cyclists and pedestrians, but this new design is intended to be used in areas with high volumes of cyclists and pedestrians:
A promising design, but with unproven safety record so don't copy this yet.
This roundabout is interesting because it combines the safe layout of the proven safest Dutch roundabout design with priority for cyclists at the crossings, when similar layouts have previously only been used where drivers are given priority at the crossings. Extra care has been taken in the design to try to ensure cyclist safety at these priority crossings - a factor which has been proven in the past to lead to a sharp reduction in safety.

A particularly poor "with priority"
design. No sight-lines, no reaction time
Frequent injuries at this location.
This design attempts to reduce the safety problem for cyclists with priority at roundabout arm crossings by a number of measures:

  1. It slows both cyclists (by tight corner radii) and drivers (by use of narrow lanes with raised tables), giving both more time to react at the crossing.
  2. Good sight lines are ensured because cyclists and drivers cross at right angles to one another.
  3. While turbo-roundabouts require multiple lanes, this design keeps the cycle crossings far enough from the roundabout that cyclists are required to cross only one lane of motor vehicles at a time.
  4. A generously sized safe refuge is provided between the two streams of traffic.
  5. The crossings being placed at a considerable distance from the roundabout itself means that the moment in time when drivers negotiate with cyclists on the crossing is distinctly different from that when they have to negotiate with other drivers on the roundabout.

Why it may not be so safe as is hoped
I think there is great promise in this design but I must sound a note of caution.

Raised tables slow motor vehicles where
cyclists have priority at the crossings, but
they resemble less successful crossings.
I am enthusiastic about the possibilities for this type of roundabout because it follows the good design principles of the proven safe Dutch roundabout design as I discussed in the previous section and that it also gives cyclists priority (everyone wants priority), but I also see reasons why it may fail to be safe. For instance:
  1. The distance between the crossings and the roundabout is quite large, but for drivers entering the roundabout the distance between the crossing and the point where they need to choose a lane is very short. This may distract drivers such that they are less likely to notice cyclists.
  2. Raised tables on straight roads have only a slight effect of slowing drivers. When I looked at three different priority crossings a few days ago, the crossings where drivers were effectively slowed had more measures than just a raised table and the example which barely slowed drivers at all looked very much like these crossings.
  3. This isn't the first time that priority has been combined with a layout which provides better sight-lines. For example, one attempt to design a roundabout in Eindhoven combining good sight-lines with cyclist priority resulted in some injuries.
I remain hopeful about this design, but we must keep in mind that it is an experiment.

Experiments are not always successful
Without experimentation we can never discover new and perhaps better ways of doing things. The Netherlands leads the world in cycling infrastructure design, and experimentation continues here. This is a good thing. But ideas should only be adopted more widely if they have been proven to work safely and efficiently.

Experiments which didn't work out so well include an experimental cycle-path surface which was installed near Assen in 2009, but then replaced again in 2013 after it had proven not to provide an adequately comfortable surface for cycling.

There was also the Zwolle "fietsrotonde" for which bold claims were made in advance, but where poor design caused injuries within months of opening.

As of right now, there is precisely one roundabout of this new design in the world. It should be viewed as a brave and worthwhile experiment and it may eventually form the basis for yet safer conditions for cyclists in the Netherlands, but it should not yet form the basis for other experimentation elsewhere. We do not yet have long term accident statistics for this design and it is premature to make any claim about whether or not this new design is in fact safe.

Note also that the new design requires a very large footprint in order to provide the required sight-lines and space for the lanes of the turbo roundabout. As such, it's unlikely to be able to be applied everywhere.

What to adopt in other countries
For experimentation elsewhere it makes most sense to copy the proven safest Dutch designs. So far as roundabouts are concerned, this is it:
This design provides the best basis for emulation elsewhere. Such roundabouts have the the best safety record within the Netherlands and are likely to remain safe even if aspects of the design are compromised.
The safest design currently in use in the Netherlands, shown in this photo, places the emphasis on cyclists to look after their own safety rather than relying upon perfect driver behaviour to keep cyclists safe. This is one of the reasons why this design is successful. The same principles have also been shown to work on similarly designed roundabouts with considerably smaller footprints.

Awful roundabout design from London
widely described as "Dutch", but
actually nothing of the sort. This is
one of many awful recent proposals
from London, none of which are
similar to Dutch designs which they
claim to have copied.
The details of any design are important. Distance between roundabouts and crossings, heights of raised tables, lane widths, road camber, geometry are all important and none of these should be taken as being the sole reason why Dutch roundabout designs are safe for cyclists. It should also be noted that roundabouts are only used by cyclists in the Netherlands where traffic volumes and speeds are relatively low and are controlled. Unfortunately, it is not uncommon for designers elsewhere to completely misunderstand how Dutch roundabouts achieve their safety. "Cargo-cult" style copies of Dutch roundabouts built in the UK in Bedford, Cambridge and York without the safety features of the Dutch roundabouts which provided inspiration and as a result they are not so safe.

In order to try to assist planners and campaigners alike to make the right choices, we offer cycling study tours which take a unique, independent, view of Dutch cycling infrastructure and which explain everything in plain (native) English. Book a place to discover more about what works well and should inspire new infrastructure design elsewhere as well as what works less well and should not be copied.

Find out how how things really work in the Netherlands before trying to copy anything.

Monday, 3 June 2013

When "Going Dutch" doesn't mean what you think it means (Turbo Roundabouts being sold as a solution in the UK)

Attempts to "Go Dutch" in the UK continue to fail because what it really means to "Go Dutch" continues to be misunderstood. It's very important not to see what the Dutch have done as a collection of disconnected pieces of exceptional infrastructure in a few places, but as an accessible and convenient cycling network for all which goes everywhere. This is how the infrastructure has attracted the entire population to cycle rather than cycling being a minority activity as in other countries.

Unfortunately, campaigning under a banner of "Go Dutch" got off to a bad start in the UK as no sooner did a campaign for Dutch infrastructure start than the main campaign group supposedly behind it immediately lowered their target from something akin to what the Dutch have to something else altogether. This turned "Dutch" into nothing more than a slogan.

Councils have also started to describe any proposal as "Dutch".

Now the same thing has happened courtesy of commercial interests who have a natural desire to maximize their profits. They are also treating "Dutch" as a slogan and seemingly any new infrastructure proposed now is described as being "Dutch" even if it is far removed from real Dutch infrastructure.

Campaigners need to be careful about what they're being fed as these companies don't necessarily have a desire to improve things for cyclists. But campaigners also need to get their own houses in order and make sure they are asking for something truly Dutch. If you're not campaigning for or building something which will result in Dutch conditions for cycling then don't use the word "Dutch" to describe what you are doing.

A "Dutch" Turbo-Roundabout for Britain
Turbo roundabouts are a junction design which is intended to deal with large numbers of motorised vehicles. They are not a cycling intervention and have in fact been criticised by cyclists in the Netherlands due to the danger that they pose to cyclists.

I first heard of turbo-roundabouts being proposed for the UK as a cycling intervention due to two bloggers having picked up the term more than a year ago. It prompted a warning from me to them that it was a bad idea. Since then it came come up again in April as a "walking and cycling officer" in Bedford made an absurd proposal for a turbo roundabout without any cycle-paths at all as a cycling facility. He quite rightly came in for criticism about this.

Now I read that the Dutch based company Royal HaskoningDHV (friendly modern slogan: "Enhancing Society Together") has jumped into the fray. They also propose "Dutch" Turbo Roundabouts for the UK, this time with cycle-paths, and this is their illustration of what they propose:

Royal Haskoning's idea of a "Dutch" roundabout for the UK
This roundabout is apparently designed to be "safe for all road users, not just cyclists". This is an interesting turn of language because while Britain's roads are similar in overall safety to Dutch roads, and motorists in the UK do not experience a higher injury rate than Dutch motorists, the safety of cyclists is considerably worse in the UK compared with the Netherlands. This is why cyclists were the only people campaigning to "Go Dutch".

The most startling thing about this design is that while it looks superficially similar to how a theoretical Dutch Turbo-Roundabout might look, it doesn't so closely resemble infrastructure which you find built in the Netherlands.

There are a few detail differences, such as that crossings for cyclists have an unnecessary wiggle. However, more importantly from the point of view of cyclists is that in most cases, people riding bikes in the Netherlands can expect to be kept well away from Turbo Roundabouts. They are not normally crossed as frequently by cyclists as might be the expectation of people who see this image.

A cyclist travelling North-South across this example has to cross four lanes of traffic as well as negotiate the wiggle in between the two separate streams. A cyclist travelling West-East has to cross three lanes, again with a wiggle. Crossing more than one lane at a time, particularly of traffic which is leaving the roundabout at different speeds, is what causes Turbo Roundabouts to be unsafe for cyclists and this is a large part of what has caused complaints by cyclists in the Netherlands. This was known to be a problem so long ago as 2008.

But there's no need for me to write about this only in an abstract sense, let's have some examples of how real turbo-roundabouts look in the Netherlands and how cyclists interact with them...

Real Dutch Turbo-Roundabouts
Here are the first five examples of real-life turbo roundabouts in the Netherlands that I found on Google Maps. On each example the routes for bicycles are shown in red. If there is no red, cycles don't enter this area:
A real turbo roundabout in the Netherlands. No cycle-paths here because while it's in a city, this is a junction between large roads with no bikes in the vicinity.

Real turbo roundabout in the Netherlands. No cycle-paths because cycle-routes are elsewhere in this area.
Real turbo roundabout in the Netherlands where a major road intersects a residential area with probably quite high cycle-usage. Cycle-routes completely avoid it, using two extra bridges over the water as well as a tunnel under the road. No crossing on the level.
A real turbo roundabout in the Netherlands in a rural area with probably lower cycle traffic. Cyclists crossing West-East have a tunnel, those going North-South have to cross the road on the level in a similar way to that pictured in the example image above.

A real turbo roundabout in the Netherlands in a rural area. Cyclists travelling West-East again have a tunnel. Those going North-South cross the road on the level at a considerably greater distance from the roundabout than is shown in the Royal HasoningDHV image
The turbo roundabouts above are simply the first five that I found on Google Maps. It would take time to find and comment on all the turbo-roundabouts that exist and I don't propose to do so. From my experience of cycling and driving in the Netherlands the examples above are a representative sample.

A pattern emerges...
Note first of all that three of the five real turbo roundabouts shown above have no interaction at all between cyclists trying to cross the road near the roundabout. Either these turbo-roundabouts are located some distance away from cycle-routes or an elaborate and completely separate route has been provided for cyclists so that there is no interaction on or near the roundabout.

Two out of five real turbo roundabouts featured above do have a crossing for cyclists on the level with motor vehicles. In both of these examples, the Google Maps imagery shows cyclists crossing two lanes on the road towards the roundabout, where visibility for drivers is best, and just one on the exit lane from the roundabout, where visibility for drivers is less good and where there is a greater danger. Also of course where cyclists cross they do so in a straight line with no wiggle to negotiate in-between the two sides of the road.
Fifth example above. Two lanes on approach on the western
side shown from Google Maps imagery have been changed to
one lane, a change in road level and sign to warn drivers.

However even that is not the end of the story. The Streetview imagery for the last example shows that though two lanes are shown as having to be crossed at once on the aerial photograph, this junction was actually modified later on so that cyclists had just a single lane of traffic to cross. This removed the danger of a double crossing at this point and improved safety for cyclists. The problems due to interactions with cyclists at junctions like this are quite well known in the Netherlands and remedial action has been taken in many locations to reduce the danger of crossing more than one lane at a time (this is true of urban as well as rural locations).

What we really have in the Netherlands
In most cases in the Netherlands, cyclists are either nowhere near the turbo-roundabout because the road and cycle-path networks are specifically designed to keep them apart or bridges and tunnels are built to allow cyclists to carry on their journeys at some distance from the roundabout. This leads to a generally high quality experience for cyclists. It is rare that one has to cross at a difficult junction and because of the unravelling of bicycle routes from driving routes it is common that cycling journeys can be made over quite long distances without having to stop at all.

Roundabouts which are on cycling routes are overwhelmingly not of the turbo design. They are generally of a smaller scale and usually used by fewer motor vehicles than a turbo-roundabout is designed to deal with.

What's being proposed for the UK?
Look back to the proposal for the UK and you'll see that they are suggesting that one roundabout could have four crossings, something which I've not yet seen with my own eyes on a turbo roundabout in the Netherlands. They also show crossings of double exit lanes which I've also not personally seen but I do know that this existed because it was the dangerous situation so caused which resulted in complaints about the safety of a turbo roundabout in Eindhoven more than a year ago.

What's more, the proposal says nothing about where this roundabout might be built. In the Dutch examples these roundabouts are not generally to be found in areas of heavy cycling. Normally they are positioned either out of town or in areas where few cyclists ride. Where turbo roundabouts are required closer to population hubs effort is taken to keep cyclists away from these roundabouts.

The proposal for the UK does not match what is normally built in the Netherlands. How can you "Go Dutch" by doing something inferior to normal Dutch practice ?

What's being built here in Assen ? (2014 update)

This turbo roundabout is part of an expanded motorway/main
road junction. N33 Rijkswaterstaat. The works are being
completed well ahead of schedule and under-budget.
Assen is building a turbo-roundabout by the motorway junction in the South of the city. It is being built in a place where neither cyclists nor pedestrians have any reason at all to go and it's difficult to reach it by bicycle. Nevertheless, I went to take a look and the video below shows the difficulty of reaching the turbo roundabout (I had to park my bike and walk over a ditch):

Turbo-roundabouts are not facilities for cyclists and in the Netherlands they are not built as facilities for cyclists.

Note that after the roundabout opened there were complaints about the danger caused to motorcyclists.

What's going on with Royal HaskoningDHV
A Dutch based company must surely include staff who are aware of the problems caused for cyclists both due to turbo roundabouts and crossing more than one lane. However, this company is proposing a combination of both of these things as an answer to calls by British cyclists to "Go Dutch". This is disappointing to see. While this may be proposed by Royal HaskoningDHV for the UK, I don't think the same company would propose such a design in the Netherlands.

One of Royal Haskoning DHV's own photos which they
currently use to advertise their services. Cycle-paths were
not part of the plan so they were not built. This is not a
cycling company, it's an engineering company
It appears on the face of it that they this company is jumping on the bandwagon of current "Go Dutch" campaigning in the UK.

Actually, we shouldn't really be surprised by any of this. Royal HaskoningDHV describes itself as a "project management, engineering and consultancy service provider". The company does not exist to encourage cycling - their other interests include such diverse things as aviation and mining, oil terminals and naval bases. That this company has Dutch roots is almost entirely irrelevant so far as their ability or desire to build cycling infrastructure elsewhere is concerned. They will build anything you want them to build.

Royal HaskoningDHV has offices in 35 different countries. They are one of several large international engineering companies which compete for contracts across the world. None of these companies seeks to lead by taking a moral position, that's not how contracts are won. Rather, the work comes almost entirely to those who present the best price for doing the required job to whatever local standards happen to apply.

I have no reason to think that Royal HaskoningDHV are anything other than a very good engineering company, and I've no complaint about that. That's what they should be. However, we have to be very careful about attempts by any companies to assimilate campaigning issues as their own in order to make sales. Campaigners should not expect leadership in cycling from an organisation like this and must be skeptical about proposals like this, whichever nation that company is based in. A positive change can come only if campaigners convince politicians to ask for standards to be changed so that future road and cycle-path designs are improved and so that the local standards which engineering companies are required to work to are good enough to make sure that those companies can only build appropriate infrastructure. Change should not be expected to come about due to commercial interests of companies.

Dutch traffic experts and associated companies currently see turbo-roundabouts as a good export opportunity. Royal HaskoningDHV are simply following this trend. They're currently talking this idea up as having something to do with "Dutch" cycling because this might help them to win a contract in the UK at the moment, not because turbo-roundabouts have ever had anything to do with cycling.

The Dutch Cycling Embassy
The Dutch Cycling Embassy style themselves as "the world's cycling experts". When the organisation was first proposed I was very enthusiastic. Many genuine experts from the Fietsberaad and other organisations were involved with the Embassy and it appeared that this would help with spreading information to other nations about how the Dutch had made cycling so safe, convenient and commonplace. A number of bloggers including myself were contacted by them and various ideas were mooted at that time about somehow helping to represent the new organisation. I helped with some of the initial publicity by travelling to meetings at my own expense and writing positive articles on this blog about them. However, those articles are no longer on my blog. I deleted them several months ago when I realised that this had become very much a one-way relationship. The organisation might still want people like me to blindly offer support but it appeared that their aims had diverged quite widely from my own.

I now feel disappointed with what the Dutch Cycling Embassy has become. In my opinion, they are now overly commercial.

Marketing of Turbo Roundabouts as "Dutch" and therefore a good thing for cycling is not the only example I've seen recently of promotion of the wrong things as "Dutch".

Riding in a bus-lane in the Netherlands. Only necessary
because the cycle-path had been dug up. Buses were kept out.
This is one example of good cycling conditions being
maintained during road works.
For example, on a recent "technical excursion" by British designers and policy workers to the Netherlands a presentation was given by a Dutch expert about "combined bicycle and bus infrastructure". Now I was not invited to this meeting and I've not seen any record of exactly what was presented, but frankly the title could be enough to mislead. While it is common to combine buses and bikes in one lane in other countries, I've never actually seen anything that I'd describe as "combined bicycle and bus infrastructure" in the Netherlands. The only time I've ever ridden in a bus lane here was when the bicycle path was closed for repair and buses were excluded from the bus lane in order to make a temporary safe space for cyclists. To combine two forms of transport which are so fundamentally incompatible as bikes and buses always causes danger to cyclists. It doesn't happen in the Netherlands because it is not convenient, safe or pleasant and it should not be pushed elsewhere either - especially not as "Dutch".

Shared Space is another example of something which is frequently promoted as "Dutch" but which makes up another of what is an increasingly long list of things which are not really good examples of design for cycling.

In the recent past I've watched as the "Dutch" ideas of campaigners were hijacked and misunderstood first by the London Cycling Campaign and then by Transport for London. Now it would appear that these hopes and dreams of real change have been hijacked once again by... commercial interests of Dutch firms.

The function of embassies has always been to promote commercial interests and I suppose I was naive to expect that this embassy should operate in any other way. The Cycling Embassy of Denmark, which the Dutch copied, is itself a commercially driven enterprise and it has successfully promoted Danish companies around the world. I actually have no argument with this happening on behalf of either the Dutch or the Danes. They are not charities and tax payers of both nations can rightly expect to get something back for their investment. However, I think there needs to be clarity about what these organisations are.

Both embassies have been quite successful at painting a picture of themselves as something other than commercially driven, but as campaigners we should be wary about any organisation which gives out hospitality and advice on behalf of a nation's taxpayers and the companies who they are in partnership with. When engineers or politicians accept this hospitality they are being sold a commercial message.

Branding is not enough
To get people in other countries to cycle is not about branding cycling or infrastructure as "Dutch", it's about providing the same opportunities to cycle as the Dutch have, The best chance for this to happen is to provide infrastructure which enables mass cycling just as effectively as real Dutch infrastructure.

Marketing and hype, commercial interests and simple misunderstandings have combined to form a confusing fog over what Dutch cycling infrastructure is and what it achieves. Campaigners need to be clear about what they want and not blindly accept things that are marketed as "Dutch". This, of course, was the theme of my blog post two months ago in which I listed some of the other examples.

There is a risk of countries moving from having infrastructure which is unattractive for cycling to having fake "Dutch" infrastructure which is almost equally unattractive to cycling, and the benefits of this will overwhelmingly be seen in the bank accounts of the companies who installed it.

If Britain, or any other nation, is truly to "Go Dutch" they can only do so with knowledge of what works in the Netherlands, how it works, and how to design it. To result in worthwhile change, standards need to be set very very high. Whatever infrastructure results from this needs (eventually) to be ubiquitous. It must aim to help everyone on every journey. If inspiration comes mainly from allowing commercial enterprises to propose what they think will be easy to sell, which probably means a few individually large, impressive and profitable headline projects, then it is likely that the result will be that of remaining "40 years behind" so far as cycling is concerned.

Study Tours
We have offered our own Study Tours for roughly eight times as long as the Dutch Cycling Embassy has been in existence and twice as long as the Danish Embassy has been established. We really are completely independent. Our tours wouldn't even be in this country if there was a better place to do them - we would have moved to that other place instead.

We provide a considerable amount of information freely readable on this blog but that isn't enough on its own. It is only by seeing and experiencing that the real learning takes place. On our tours we show you both good and bad examples of infrastructure and we try to explain why they are good or bad. These tours are genuine bicycle tours on which participants use the infrastructure which we are demonstrating because it is the experience that counts, not how much time has been spent looking at slides.

We aim to give impartial advice. Why not take advantage of our years of experience ?

There's a handy online map of all known turbo roundabouts on which you can find Google Maps photography of each. Note that you have to look only at those with purple flags if you want to see "true" turbo roundabouts and not hybrids of some kind or another.

Occasionally people ask us why we charge "so much" for our study tours. I ask in return what they think their time is worth and what they think ours is worth. This is something we have done for many years as a passion, not for commercial gain. Initially we ran the tours at a loss in order to make them available to as many people as possible. It cost us many thousands of euros to do this but we found that even then we could not make it attractive to British politicians. We now have to run the study tours at a profit because otherwise we could not afford to run them at all. However once we take out our meagre expenses, it is rare that the tours leave us with anything even close to minimum wage for our time. Still too expensive?

We don't receive any funding at all from government. Actually it works in quite the opposite way - we pay taxes to the government, some of which they use to subsidize the tours and presentations offered by the Dutch Cycling Embassy.


We receive a lot of unsolicited email from companies trying to sell something, including items from Dutch engineering and design companies who think we'll provide free advertising to them by hyping large projects they've been involved in. These big projects get quite enough hype elsewhere and I'm not going to add to it. The most important thing about Dutch infrastructure is its ubiquity - but I guess that doesn't have the same potential for quick and easy profit.

Tuesday, 24 January 2012

Turbo Roundabouts. Be careful what you wish for.

After writing about Bow Roundabout in London a week ago, I looked around and found other people had done the same. However, at least two had proposed what is very much the wrong solution. The idea of a "Turbo Roundabout" came up on both the Cyclists in the City and Pedestrianise London blogs. It's not the right solution.

Sometimes you have to be careful what you wish for. If you're not absolutely sure what a Turbo Roundabout is (in particularly, a "turbo-roundabout" as might be implemented by TfL) and not absolutely sure that it is what you want, then don't ask for one.


This video from the Fietsberaad shows a "Semi"-Turbo Roundabout in Hilversum. It initially appears to work quite well in the video designed to promote the idea, but this is merely a "semi-turbo" roundabout and in many ways actually more closely resembles normal Dutch roundabouts. I caution to look out for where there are two lanes of motor vehicles which need to be crossed at once by cyclists and pedestrians - a case which is excluded from the video:

The next video came up as a related video on youtube. It's a simulation of a Signalised Turbo Roundabout. It shows how motor-vehicles flow nicely around the roundabout, but there is no consideration of cyclists or pedestrians in the simulation:

Indeed, the whole point of the turbo roundabout is to "improve traffic flow". Turbo-roundabouts were never intended to make things better for cyclists or pedestrians. Cyclists don't much like them. The Fietsersbond (Cyclists' Union) in the Netherlands has complained about unacceptably long crossing delay times for cyclists at Turbo Roundabouts.

As I said before, "be careful what you wish for". Why ? You might end up with something similar to what is in the next video - a real, live, turbo roundabout in Eindhoven videoed by someone who isn't trying to sell the concept. The title is "Floraplein in Eindhoven very dangerous for cyclists":


Note how crossing double exit lanes causes trouble for cyclists.

So what's the alternative ? I didn't have any photos or videos of my own to show here because we don't have turbo roundabouts in this area. In fact I've documented before what all the roundabouts in Assen look like. None are turbo roundabouts, and none cause problems for cyclists.

Some other ideas are pointed to by the website set up by people who are campaigning to improve or replace the Floraplein turbo-roundabout. It includes a link to an interesting presentation about alternatives to turbo-roundabouts written by Peter Kroeze of Ligtermoet and Partners.

When observing from afar it can be difficult to tell what really works from what does not work. We've already seen both shared space and strict liability given far too much credit for the cycling conditions in the Netherlands. Let's not add Turbo Roundabouts to the list of things that are misunderstood.

If you want to know what real Dutch cycling infrastructure is really like, why it works, and why cycling is so popular and so safe here, please book a study tour. Not many people have the experience that we have of living and cycling in two countries as different as the UK and the Netherlands, and we can pass a lot of this knowledge on within a few days. Reading blogs like this, reading articles and looking at Google Streetview can only get you so far.

2013 update - Bedford in the UK building a turbo-roundabout 'for cyclists'
A year after posting this blog post, warning that Turbo Roundabouts, no matter how attractive the name sounded, were never intended to be used by cyclists, a story appeared about the "walking and cycling officer" of Bedford in the UK was proposing to use "Dutch experience to improve cycle safety" by building a turbo roundabout which is actually worse than the example from Eindhoven shown in the video above because there is to be no cycling infrastructure at all.

In Bedford cyclists will be asked to
give-way or dismount by these signs,
which have never been used before.
If changing the law, why not do it
for something more worthwhile ?
On the Bedford turbo roundabout, cyclists are supposed to either share the road with cars or to cross the road like pedestrians. They are branding this as "Dutch" even though it is something which you would absolutely never see in the Netherlands. Frankly, it's difficult to imagine a larger mistake than this.

This recalls an online conversation which I had in 2011 with another Bedfordshire planner. He also wanted to build a "Dutch" roundabout which omitted cycling infrastructure. Various reasons why were given, including the "difficulty" of combining existing on-road cycle-lanes with a Dutch style roundabout which had cycle-paths and his idea that "not all" Dutch roundabouts had separate cycle-paths.

The discussion with the Bedford planner prompted two blog posts from me to illustrate what I had said to him in email. One of these posts demonstrated that there is no problem at all in merging from an on-road cycle-lane onto a properly designed Dutch roundabout. The other post demonstrated how every single roundabout in Assen has separate facilities for cycling because that is the norm in the Netherlands. His concept of a "Dutch" roundabout without separate cycling infrastructure was not similar to real Dutch infrastructure.

Cycling infrastructure is not an optional extra on roundabouts. Where cyclists have to use the same roundabout junction, specific infrastructure must be provided.

It's disappointing that after having had this long conversation and tried to explain to one Bedford planner, another should still have similar misconceptions two years later. Note that the first Bedford planner also pushed through his flawed ideas, building a dangerous design of roundabout branded as "Dutch" in Cambridge.

Signed off by campaigners
Despite my warning and others, this project continued. Further investigation by myself in 2014 revealed that the Turbo Roundabout in Bedford had been signed off by representatives of several British cycle campaigning organisations: Tony Russell (Sustrans), John Franklin (Cycle Nation), Chris Peck (CTC), Ruth Jackson (British Cycling), Ralph Smyth (CfPRE) as well as Robert Semple (Transport for London).

It's extremely disappointing to find that campaigners have such low aspirations as to rubber stamp a proposal which is as dangerous for cyclists as this roundabout design.

Update 2015
No on-carriageway markings
Carriageway exit angle too sharp
Double Yellow Lines over c/w exit
downloadable report is now available about this roundabout. One image, along with its caption, is shown on the right.

I recommend reading the report in full. Amongst other conclusions, it is said that "Arrangement of cycle crossings maximises possibility of conflict between cyclist and pedestrian"which shows the many problems caused by the design used in Bedford.

This mistake should not be repeated.

Find out about proper infrastructure designs.
We run cycling infrastructure study tours precisely in order to try to help councils like Bedford to not make such expensive and dangerous mistakes as this one. Planners need to be educated. They need to learn from the best examples and not just guess at what they think best practice might be. We'd be very happy to host a contingent from Bedford if they'd like to see what the Dutch really do so that future "Dutch" innovation in Bedford can be inspired by the real Dutch infrastructure.

2013 second update
The British arm of a Dutch based company has proposed turbo roundabouts for the UK which I believe would not be built in the Netherlands. Read a blog post about this, including pictures of real Dutch Turbo Roundabouts.

Also read a blog post which summarises several things which are "Dutch" but which should not serve as inspiration.

2014 update. Assen is building a turbo roundabout
Assen is building a turbo roundabout to serve a motorway junction in the south of the city. As such, it is correctly being built in a place where there are many motor vehicles but where neither pedestrians nor cyclists have any reason to go. Watch a video showing this roundabout and how difficult it is even to get near it by bicycle.

Thursday, 6 November 2008

Newsbrief

A little while ago I signed up for the Fietsberaad Nieuwsbrief which lets you know what is going on with cycling in this country. The Fietsberaad is the Dutch cycling experts group.

A new copy of the email Nieuwsbrief arrived yesterday, and here are some of the main items in it:

I'm pleased to be able to report that Houten has won the title of Fietsstad 2008 (Cycling City 2008). Councillor Marianne Kallen said "we are very proud." Houten was the first place in the Netherlands to try a lot of novel ideas. I have covered Houten before.

Also, it's great to see that Assen's plans for a new countryside path that I also covered before also gets a mention. Follow the link to see what it will look like.

Minister Eurlings of the ministry of traffic and works has announced an extra 30 million Euros of funding for cycle parking at railway stations and improvement of five cycle routes which it is believed could have a particular effect in reducing traffic jams. They were highlighted by a campaign called "Less queuing with the bike." Fietsersbond, the Dutch cycle campaigning organisation has criticised the plans, saying that at least 60 million Euros is required to make the improvements that are needed, and for the result to be of "Olympic Quality" (a phrase use earlier by the minister).

The Fietsberaad is not so happy with the latest proposals for roundabouts. Most roundabouts in the Netherlands currently have a single lane for cyclists to cross, but these "turborotondes" will reduce safety and comfort for cyclists. An example is given showing a better way of doing it, giving priority to cyclists at the crossings. (turbo roundabouts have remained controversial. See further posts about this type of roundabout, one of which includes a video showing a real life example of the problem illustrated here).

The German centre for health reports that Dutch people keep cycling in bad weather but Germans don't. Their report goes on to say that more than 63% of Dutch people use a bike at least three times a week. In Germany and Denmark this is 45% and 46% respectively. Eighteen percent of Dutch people ride more than 30 km per week and 31% ride between 10 and 20 km per week. Germans ride on average a bit less than the Dutch, but more than the Danes.

All three nationalities see cycling as good for health, brings you closer to nature and allows flexibility in journeys, but only in Germany is health the most important reason to cycle. In a questionnaire, 77% of Germans put health as the number reason to ride. 47% of people in all three countries said too long a distance would put them off cycling, and a third don't much like cycling.

Bad weather stops around 40% of Germans from riding, but only 18% of the Dutch and 25% of the Danes. Only 19% of Germans cycle to work, vs. around 30% of the Dutch and Danes.

These three countries are those that John Pucher and Ralph Buehler wrote about as being at the forefront of making cycling irresistible.


In other news, The Erasmus Medical Centre in Rotterdam is introducing a new policy of free folding bicycles for workers in an attempt to reduce the current 45% of workers who arrive by car to 20-25% and according to the Swiss BPA, a safety organisation which wants to make cycle helmets compulsory, 38% of Swiss cyclists now wear a helmet, up from 18% in 1999. This is, of course, a vastly higher percentage than in the Netherlands. However, vastly more people cycle in the Netherlands than in Switzerland, and they're safer too.

There were one or two other bits, but you'll have to subscribe yourself if you want to read them.

The Fietsberaad also produces a regular magazine about cycling infrastructure.