Showing posts with label bedford. Show all posts
Showing posts with label bedford. Show all posts

Friday, 25 July 2014

New infrastructure. A real improvement or making stop-start cycling even slower ?

This piece was originally titled "New British Infrastructure..." and the bad examples shown below are all from the UK. However, the exact same problems are seen around the world.

Cyclists often win "commuter races" because of their ability to get through traffic jams which hold up both motorists and public transport. Many existing cyclists enjoy the fact that they can make fast journeys have have predictable journey times. These give cyclists major advantages over using other modes of transport.

If cycling is to be spread wider through the population then other people need to see the same advantages. There is no point in giving people a choice between being able to ride slowly on inadequate cycling facilities or having to "take the lane" on the roads. Neither of these two options is good enough. Cycling must be both safe and convenient and we should not be asked to choose between one or the other of those two desirable characteristics.

Making stop-start cycling even slower

Unfortunately, many people who plan for cycling in the UK don't seem to understand the need for efficiency when cycling. Rather than creating cycling facilities which make cycling both convenient and safe, there is a consistent problem across the UK that facilities are designed to such a low standard that they are neither convenient nor safe.

From a Southend council website, the
Prittle Brook Greenway. Nice photo of
recreational use on a sunny day but this
is simply too narrow for a bidirectional
shared use path and its inadequate as
a main cycling route. Riders appear
to be approaching one of many places
where they will have to cross a road.
Southend-on-Sea
I wrote two weeks ago about Southend's lacklustre attempts at encouraging cycling. Quite apart from having used almost all their funds for two expensive schemes which are designed for motor vehicles and ignore the needs of cyclists, the blind corners, narrow shared-use cycle-paths and road crossings of astonishing slowness seen elsewhere demonstrate how the town is not working seriously to provide efficient go-everywhere routes for cyclists.

In response to my blog post there were several suggestions that I should especially have looked at the Prittle Brook Greenway because this is a highlight.

I decided in any case to look up what I could find about the Prittle Brook Greenway. The first item to come up was Southend's own information, a small part of which is reproduced here. The second item was a local campaigner's description of it as "a 2 mile long, 2 metre wide shared use path that involved 19 road crossings". Follow the link to see a surface which washes away in the rain on a path with blind corners and low social safety. A local civil engineer pointed out the lack of lighting and a previous problem with dog excrement as well as a later post discussing problems with crossings and with vandalism.

Would cyclists need this
advice to ride on Southend's
best cycle-path
if it were
built to a proper standard ?
The campaigner's description goes some way to explain why Southend council's official recommendations for this route suggest that under 12s should be supervised, that there should be "no racing" and that cyclists must "Look out for vehicles" and "take care" around pedestrians. I've seen paths like this all over the UK and I'm not sure I missed much by not seeing this particular example. It can be OK for an outing with children on a sunny day but this is not the sort of infrastructure which leads to mass cycling.

The truth is that I missed the Prittle Brook Greenway before because it didn't go anywhere that I was going. The most important result from Dutch research in the 1970s was that a dense grid of very high quality routes is required. i.e. Good infrastructure shouldn't be something that you have to look for, it needs to be everywhere.

Even if it is of very high quality, very direct and socially safe (unfortunately, Prittle Brook doesn't tick those boxes), a single path cannot achieve much on its own because it simply cannot serve every location. Southend has actually spent a lot of money. They could have transformed the town but they've instead directed it at the wrong projects. Neither a high enough quality level of facility nor the required dense grid have been provided for cycling and that's why cycling remains a niche mode of transport in the town.

Brand new infrastructure
in London's Olympic park.
Not an uninterrupted and
direct route. It's also very
obviously too narrow for
a bidirectional route.
Source: @twistandshout
London
I visited London last year. From a cycling point of view, I took two things in particular away from the visit:

Firstly, cyclists in London are a rare breed. Just as everywhere else where cycling is for a small minority, those who do it mostly fit into a particular demographic. School trips by bike are difficult to imagine taking place. You don't see a lot of pensioners or disabled people cycling either. Cyclists in London must be alert and constantly looking out for where the next threat will come from. Cycling isn't a way of getting about which anyone can choose as most people simply won't consider it in those conditions. Those who cycle in London have reasons to do so.

Secondly, there was an overwhelming sense of frustration and slowness. On Dutch cycle-paths, I expect to be able to get up to speed and to be able to keep cycling with the minimum of interruptions until I reach my destination. I rarely have to stop at traffic lights and am rarely inconvenienced by motor traffic. That's not at all how it is in London. Cycling in London feels quite competitive. People jostle for position in ASLs, there's a lot of sprinting from one traffic light junction to another, but overall progress is slow. Average speeds over a complete journey, even over short distances, are low. Compared with what I'm used to, I found cycling in London to be irritatingly SLOW and I was amazed by how long it took to cover even a short distance.

London has not learnt the importance of providing infrastructure of a high enough standard. The "superhighways" are well known to be not super at all but rather than copying from best practice and providing adequate funds to do a good job, London is still going its own way, thinking up new and absurd ideas, producing lots of press releases and trying to build the actual infrastructure on the cheap. For instance, less than a year has gone by since London proposed an absurd multi-stage right turn which demonstrated a complete lack of understanding what is required to make cycling both safe and efficient, and they've continued right up to the present time with designing and building infrastructure which is way short of the standard which is required for true mass cycling.

Amazingly, Bedford once had this
as a proposal. It's close to a proper
safe Dutch roundabout
in design.
But they scrapped that...
via aseasyasridingabike
Bedford
The continuing "#Turbogate" scandal in Bedford, where they claim Dutch inspiration for a roundabout design which is fundamentally different from real safe Dutch roundabouts, dates back a long way. I was first involved in trying to advise a Bedford planner about how Dutch roundabouts really accommodate cyclists way back in 2011.

Sadly, rather than accept the widely published and very reasonable criticism of their flawed design, Bedford and their backers (including Sustrans) have not accepted the widely published criticism but have continued to push a design which divides cyclists into two groups: those who will "take the lane" on the busy roundabout and those who will be too timid to do this and will instead use pedestrian crossings to pass the roundabout. Dutch cyclists never have to choose between "safe" or "fast". With one minor change which might actually make the roundabout more dangerous, building of this flawed and dangerous design started this week.


No on-carriageway markings
Carriageway exit angle too sharp
Double Yellow Lines over c/w exit
Update 2015: A 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.

Northern Ireland
On-road cycle-lanes are amongst the more useless types
of cycling infrastructure and they should never be this
narrow
, but this is one of the better examples of
infrastructure in the DOE video. The width problem is
demonstrated in the video by the cyclist swerving out
before the grey car because she thinks the blue car won't
stop for her. via NIgreenways
Northern Ireland has its own problems. The nigreenways blog pointed out this week that the Department of Environment, "where local road safety promotion sits in isolation from the road builders", has produced a jaw-droppingly bad road safety video which gives ludicrous recommendations for how to stay out of trouble, such as that people should "avoid the busiest times" (i.e. don't use cycling as a practical means of transport for such things as going to work or to school) and makes one excuse after another for the terrible quality of the infrastructure which they have built.

It's the same problem as seen elsewhere in the UK. Northern Ireland's cycling infrastructure is not fit for the purpose of making cycling attractive and convenient for the entire population. That's why Northern Ireland, like the rest of the UK, has a very low cycling modal share.

Cambridge
I've written quite often about Cambridge because we used to live and campaign there, watching local infrastructure change at a glacial pace.

Cycling in Cambridge has perhaps the greatest help from demographics and local laws of any city in the world, yet it doesn't not have the highest cycling modal share of any city in the world. I suspect that if the city had infrastructure like Dutch cities then Cambridge could quite easily have a higher cycling modal share even than Groningen. Unfortunately, the current level of political commitment and investment prevents cycling in Cambridge from growing to its full potential.

While the city has the highest cycling modal share in the English speaking world, it doesn't make a useful model for other places because the causes of the relatively high cycling rate of Cambridge are not things that can be duplicated. Much of the cycling in Cambridge takes place despite the infrastructure rather than because of it.

Since we left the city there have been changes, but they've not made a very big difference. There is still no sign of the comprehensive grid of high quality infrastructure required to get everyone cycling. For instance, it took 12 years of discussion and a lot of campaigning before the busy Gilbert Road was changed, but the outcome even on this one km length of road wasn't nearly what it could have been.

It's part of the plan to deliberately
make the cycle lane narrower when
it passes the bus stop, specifically to
slow cyclists down. That creates
danger for cyclists and should not
be a feature of a real cycling facility.
Source: Cambridgeshire CC
More recently there have been proposals to change Hills Road and Huntingdon Road. These proposals have been a long time coming and were eagerly awaited. I used Huntingdon Road regularly when we lived there so I looked at this part in detail and explained in a long comment on the Cycling Embassy of Great Britain website the many problems with the design for this short length of road. Please read that link to find out more.

To summarise, they're planning to change just one side of approximately one mile of road (you're on your own on the return journey). There are many problems packed into this distance, which will make for a far too varied and "exciting" mile of cycling. Consistency may be boring but everyone knowing what comes next is a safety feature. Just one of the issues with the plan is enough to illustrate the gulf which exists between what Cambridge really needs to enable cycling for everyone and what the plans which currently exist in the city promise: "the plan is for this already narrow cycle facility to be even narrower and even more dangerous at bus-stops. Here it will shrink to a totally inadequate 1.5 m, and this is to be done deliberately in order to slow cyclists down. If this were a cycling facility designed to actually facilitate cycling then it would try to make cycling faster and more convenient, not to make cycling slower."

After the bus stop design which makes
you slow down you then come to this
junction at which you'd better speed
up and "keep your wits about you".
A lethal junction design. New for
Cambridge but exactly like junctions
not seen in Assen since the 1970s.
That's just one of the problems. There are other faults such as being too narrow for safe passing and lethal junction designs and that it gives up entirely before the biggest junction. But in my view the most damning thing is that even this much awaited very short length of facility is not actually to be optimized for cycling at all but will instead include features deliberately designed to make bikes slower and therefore also less attractive.

Rather than seeing the existing level of cycling in Cambridge as good for the city, good for the people of the city and as something to encourage more of, planners in Cambridge view cyclists as if they are a problem which it is somehow their job to solve. This is precisely the attitude which has prevented Cambridge from achieving its potential as a cycling city.

Leeds / Bradford
What happens at large traffic light and
roundabout junctions in Leeds now ?
BBC Radio Leeds rode along a cycle-
path new enough not even to be open
yet and found many problems in a
short length of cycle-path. Amongst
them are that the new facility simply
ceases to exist at major junctions,
where it is needed most.
The Leeds-Bradford cycling "superhighway" proposal was announced with the customary blitz of publicity surrounding all new cycling schemes in the UK and achieved some considerable press already, but like most new infrastructure in the UK it's designed in such a way that it will be far from convenient to use.

Its telling that the official blog of the project (they have their own strange blog software so it's not possible to link to the correct page) includes statements like the following:

"Cycling in a segregated cycle lane [...] might be slower, for instance when they are congested, or when we are required to make two-stage right turns, waiting for signal phases." i.e. they're planning to make the cycle-paths too narrow so that it's difficult to pass safely and to use junction designs which are already known to be both inefficient and unsafe for cyclists.

"Many current cyclists are used to speeds of 20 miles an hour or more (going downhill) and a lot of current cyclists are, for want of a better phrase, speed freaks. It will not be easy to maintain this along all of the segregated routes." i.e. existing cyclists for whom journey time is important (that's everyone who cycles if they're late for an appointment, for work or for school) as "speed freaks". Rather than being seen as a group of users who need to be supported and assisted to make their journeys in safety, they're seen as a problem. Rather than planning for the entire population, these planners want to design infrastructure for a mythical person who is never late, never in a hurry and has all day to meander around and to work out how to use their complicated design. They are asking people to choose between "safe" on their cycle-paths or "fast" on the road. No-one should be asked to choose between those two things.

There's nothing "super" about these "superhighways". The criticisms which have come up are not of segregated cycling infrastructure in and of itself (there are no speed limits on Dutch cycle-paths) but of the poor designs which are being pursued for this project.

The City Connect project in Leeds and Bradford has designed down to extremely low standards (to read more, see The Alternative Department of Transport's extensive criticisms of the plans). By building cycle-paths too narrow for safe use at speed, and by implementing copies of junction designs known to be both dangerous and inconvenient rather than copies of the safest and most convenient designs of roundabouts and traffic light junctions, they are guaranteeing that the most efficient place for a cyclist to be along this route will remain the road and not the cycle-path.

But aren't these places "making a start" ?

The King's Hedges estate in Cambridge
is one of many examples of where not
quite good enough infrastructure for
cycling was not improved upon or
linked with other areas to create a
useful grid. The result is that these
paths are not heavily used because
they do not lead to many destinations.
This could have been "a start" over
30 years ago but it was not.
When examples like these are criticised, it's quite common that someone will suggest that "it's a start". People have a hopeful idea that building substandard infrastructure now will somehow lead to better infrastructure later. They'll say that "everything has to start from somewhere", "something is better than nothing" or suggest that providing infrastructure like these examples works to allow people to "gain experience" or as a "gateway drug" to more cycling in the future.

Unfortunately, none of this is true. There is no "tipping point". i.e. no level of cycle-usage from which only growth is possible and no level of cycle-usage from which an increase in funding for cycling in inevitable.

What's more, none of this is new. There already exist dozens of existing examples of older inadequately designed infrastructure which wasn't quite good enough when first built and which remains not good enough decades later.

We don't need to keep repeating the same experiment and achieving the same result. We have known for decades that isolated islands of not quite good enough infrastructure do not work as this was the most important result from Dutch research in the 1970s. Islands cannot create the comprehensive good conditions which are required for true mass cycling and they cannot demonstrate the potential for such a comprehensive grid. All that is achieved by repeating these errors is that time passes without real progress being made. That is why the UK and other countries are more than forty years behind the Netherlands.

The Dutch already avoid these mistakes

When you're working towards a high cycling modal share, it's important to make cycling as convenient, as pleasant and as safe as possible. All these things must go together. To encourage everyone to cycle, facilities must enable all types of cycling.

While planners in the UK spend time trying to make cyclists slow down, the Dutch CROW guidelines emphasize the need to speed cyclists up. The Dutch work to remove those things which could slow cyclists down or lead to discomfort when cycling as these can put people off cycling.

In the Netherlands, having to stop frequently when cycling, having to cycle slowly, having to ride single file, not having ridght of way and not having enough easy turnings all count as nuisances. These nuisances are recognized as working against cycling and must be reduced.
In the Netherlands, cyclists are seen correctly as already a slow means of transport. Even the fastest cyclist does not reach speeds which are easily reached in a car. A requirement for "low speed at conflict points" is met by slowing down motorised vehicles not by slowing cyclists. It is recognized that forcing cyclists through narrow gaps, pushing them into conflict with each other or with other modes and limiting efficiency of junctions all have negative effects on cycling. Cycling needs to be made faster so that it competes with motor vehicles. Having to slow down, even rarely, is a "nuisance" and nuisances are designed out of the cycling network.

Wide high quality cycle-path in
Assen. It's good for relaxed cycling
and also for fast cycling. Everyone
is safe here.
Consider what this paragraph implies: "Cyclists have no standard traits. On the contrary, the Dutch cycling population is characterised by a broad composition in terms of age, gender, physical capacities and reasons for cycling. In certain conditions, the fast commuter cyclist is indicative for the design (in terms of design speed, for example). More often than not, however, the group of older cyclists with limited physical capacity will determine the limits (in terms of gradients and crossing times, for example). In still other cases, the design will be geared to young, inexperienced, sometimes careless cyclists (in terms of eye level, red light discipline and the complexity of intersections, for example)."

Dutch racing cyclists and other fast
riders
use cycle-paths even when
riding in large groups. And yes,
they all got across in one green light.
So the Dutch view is that there is no standard cyclist, and everyone should not and cannot be reduced to a common level. Rather, the infrastructure for cycling needs to support all cyclists, whatever their ability or degree of strength. Designs may be varied in some locations, for example to make conditions extra safe for children near schools, but that doesn't mean abandoning the other cyclists at that location. The only way to achieve true mass cycling is to accommodate the entire population's needs.

Far from seeing cyclists as "speed freaks" who need to be slowed down, the design speed for corners on Dutch urban cycle facilities is set as a minimum of 20 km/h for minor cycle-paths rising to 30 km/h for through routes because "people must be able to cycle at high speed". Yes, the intention is to enable people to safely cycle as fast as they wish to. That is how to make cycling speeds competitive with other modes and therefore make cycling attractive.

Another Cambridge example. At the
end of the decline from a bridge there's
a bend which hides dark coloured
bollards just before cyclists must come
 to a stop for a road. This does not
come close to Dutch requirements for
"free deceleration space".
The Dutch recognise that speeds of "35 to 40 km/h" are not at all uncommon downhill and this is why there should be "plenty of free deceleration space at the bottom of the incline, with no intersections, sharp bends or other obstacles in the way". The requirements for speed in the relatively flat Netherlands are way above the speeds that Leeds and Bradford see as problematic due to "speed freaks" going downhill and clearly above the speeds that Cambridge planners think will be achieved along Huntingdon Road. And of course its not just those two. Look at Bedford, Northern Ireland, Southend or London and you find similar constraints, low standards and treatment of cyclists as a problem.

Low aspirations lead to a lower cycling modal share. The full potential of where you live can only be achieved with the very best infrastructure. Copying from and starting to emulate the best examples from the leading nation is the most efficient way to make a real start. Until you have caught up, there's no reason to try to re-invent the wheel.

Avoid repeating mistakes: take a Study Tour

We run regular cycling infrastructure study tours to demonstrate to politicians, planners and campaigners from all over the world what the best quality cycling infrastructure in the world looks like.

The frequency with which the same mistakes are repeated elsewhere demonstrates that there is a widespread lack of knowledge of how to progress. We can help with this, but only if people seek our advice.

My daughter went to a music festival over the weekend. She sent me this photo of the cycle-parking: bicycles as far as the eye can see. This is what true mass cycling looks like, but photos like this sometimes mislead. This volume of bikes is not here as the result only of providing cycle-parking. The most important part is the comprehensive grid of extremely high quality infrastructure which goes everywhere, which accommodates all types of cyclists whether or not they're in a hurry and makes everyone safe. That's what enables huge cycle parking facilities across the Netherlands to fill up.

It's startling how many countries have cycling design guidelines which include ideas which are deliberately designed to slow cyclists down.

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
A 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.

Monday, 19 September 2011

Connecting a roundabout with cycle paths to a road without them

I recently had an online conversation with a planner in Bedfordshire in the UK who was designing a "Dutch style" roundabout using Dutch geometry but with no special cycle facilities. To me, this sounds rather like making a cheese sandwich without the cheese. The reason why Dutch roundabouts are designed as they are was being missed on a very fundamental level by this planner.

The reason stated not to include cycling facilities was that a short way beyond the roundabout, cyclists would have to join the road again. This is inevitable, of course, in the current situation because you can't do everything at once. However, it's not a reason why the right thing shouldn't be done at the junction which is being redeveloped.

My correspondent asked for examples. Between the explanation in this blog post and my next blog post also written for this planner (showing all the roundabouts in Assen), it should be possible to gain a reasonable idea of how Dutch roundabouts work, though obviously not as good an impression as would be gained from coming here to take a look.

In reality, the difference in experience for a cyclist using a Dutch roundabout and a British roundabout is not just the geometry. Specific cycling infrastructure is an integral part of roundabout design and that is what makes cycling so much safer and more pleasant on Dutch roundabouts. It's really not the same at all to take the geometry of Dutch roundabouts without also including the cycle facilities which go with them.

Even where there are no cycle-paths on adjoining roads, there is still an advantage to having them around a roundabout. There is a big safety advantage as well as a potential improvement in convenience to well designed junctions, including around roundabouts.

I've not found a roundabout locally with no cycle facilities at all. However, this one in a village a few kilometres North of the city provides a good example of how to link a road without cycle-path to a roundabout with cycle-path, preserving safety on the arm of the roundabout which doesn't have a cycle-path.


Note that this video includes explanatory captions which are only visible on a computer and not on a mobile device.

Some may quibble at having to give way at the crossing of the other roads joining the roundabout itself. However, consider that if I didn't give way where I do in the video, I'd otherwise have done so to the same car on the roundabout itself. In practice, most usage of this junction by cyclists is on the main West-East cycle-path which we join very briefly on our way around the roundabout. Because the road to the South serves only a dead end road with one business and a farm on it, there is rarely anything to give way to. The only way to have to give way twice is to ride around the roundabout in order to make a video. Note that designs of roundabouts on which cyclists have priority over drivers have a much worse safety record than designs like this.

The industrial area just North of the roundabout does not have segregated cycle paths, but just cycle lanes on the road. In the Netherlands, this is quite unusual. There are 29000 km of cycle-path separated from the road, but just 5500 km of on-road cycle lane. However in a location like this, with a 30 km/h speed limit on a road which mainly serves adult cyclists, this is adequate provision.

The direction travelled in the video is shown by the red arrow. The pink lines are the other cycle-path which we intersect. These provide the main West-East route for cyclists. The road to the South serves one business and a farm. It doesn't offer a through route by bike or car.
The reason why the Netherlands has a comprehensive network of good quality cycling infrastructure and the UK does not comes down to two things: They made a good start, and they've continued with the effort to make things better.

What exists here now wasn't all built at once. Rather, isolated islands of infrastructure were built and eventually they came to be joined up to make the current network.

The best approach in Britain to be to insist on building examples of the best possible infrastructure rather than taking the approach that it's not worth doing something because it isn't already done elsewhere. It is inevitable that in the UK at the moment good examples will be isolated islands. The important thing is to make sure that those isolated islands are of good quality. Good things sell themselves. Once something has been shown to work well, as Dutch roundabout design including cycle paths certainly do, then it is easier to make a case for more of the same elsewhere.

Update November 2014
I deliberately did not name "the planner" who inspired this blog post more than three years ago because my communication with him had been anonymous. Our correspondence was entirely online and unfortunately was rather repetitive because he was struggling with the concepts of Dutch roundabout design. Many emails were sent, many examples given and I made the suggestion that he should come and take a look at real Dutch infrastructure before going ahead with building the flawed design which he was proposing.

Three years passed. That's more than enough time to have thought through and improved the original design. More than enough time to have come to find out how the Dutch really design roundabouts. Unfortunately, neither of these things happened. The same planner has recently designed and got built a roundabout for Perne Road in Cambridge which is almost exactly as he'd suggested he would build in Bedfordshire three years ago. It took just a few days for this dangerous design to cause injuries.

"The planner" actually boasting about his design online, so I see no reason why I should not now name him as Alasdair Massie. This blog post and the the following one showing how all the roundabouts in Assen have cycling infrastructure, were both written as part of my attempt to provide Alasdair with a free education about how Dutch roundabouts are really designed. I wanted to help him not to make the mistake that he has made, to try to avoid people being hurt by a bad design. Unfortunately, some people simply won't listen to advice.

More recently I have described how the safest Dutch roundabouts are designed. This is the blueprint for how roundabouts in other countries should be designed.

We are still available to show planners from the UK, or other countries, what true best practice looks like.

Please also read about other real Dutch roundabout designs

We offer Study Tours in the Netherlands in order to provide a service to campaigners, planners and other parties with an interest in how the Netherlands has achieved its extraordinary modal share and safety figures for cycling. Uniquely, we've experience of both the UK and the Netherlands and know how the two countries compare from a cyclists point of view. We offer a time-saving way of finding out what the important differences are, rather than having people making guesses from the other side of the North Sea. Thus far, no-one responsible for designing cycle provision in the UK has come on any of our tours.