Mass cycling requires sociable side-by-side cycling which requires cyclists to take up space. Why then are cyclists the only road users expected to travel single-file?

Children cycling home from school five-abreast in Assen. Riding on the pavement is not what we encourage, but this is a good illustration of how safe those children feel. Read more about this street, which is particularly well designed.

For ten years on our study tours we've suggested to participants that they should take advantage of the opportunity to cycle side-by-side while they are in the Netherlands. Not only does this keep groups together better than they ride single-file but more importantly it's far more sociable and more efficient. We can talk to each other as we cycle and it takes less time for the group to arrive at each destination than if we are strung out into a single line.

Germany last week: He's in the bushes, we're on the grass.
Sadly, German cycle-paths are often inadequate.

Cyclists from other countries often find this a little difficult to do because they are conditioned to being able only to cycle single-file and it feels as if you're "in the way" if you ride side-by-side. I point out that it is only cyclists who are subjected to this restriction:

Pedestrians expect to walk side-by-side everywhere in the world. No-one would consider advocating that pedestrians should always travel single-file.

Drivers travel side-by-side even when they're alone as in a car they take an empty chair along beside themselves taking up the space that another person might otherwise use. Tandem seating cars are almost unheard of (I know of this) there are no demands are made for drivers without passengers to use motorbikes instead of cars in order that they take up less space.

Sitting four abreast on a bus, we take up nearly as much width
as the five cyclists at the head of the page, but this is normal
and no-one complains.

On buses it's possible to be able to sit four abreast yet there are no calls for buses to be made narrower.

It is cyclists alone who are told they must cycle single-file, or who find that where side-by-side cycling is allowed by law they are regardless put under pressure to ride single-file.

As an example, the UK's highway code states "never ride more than two abreast, and ride in single file on narrow or busy roads and when riding round bends" which while it sounds quite liberal actually gives lots of scope for telling cyclists not to ride two-abreast. Many roads are narrow or busy and all roads have bends.

Four members of the same family riding together in a sociable manner in Assen city centre. Dad is helping the youngest.

Side-by-side cycling makes cycling safer and more fun
Being able to cycle side-by-side is important because it allows cycling to be sociable. All other forms of transport are sociable and cycling should be too. People carry on conversations as they travel by car by public transport or as they walk, and it should be equally possible while cycling. What's more, side-by-side cycling is also necessary for safety. If you're accompanying a child or accompanying someone who is unfamiliar with your town, cycling side-by-side is a good way to ensure that the other person is travelling in the same direction or has seen the same signs as you have.

Riding two-abreast shouldn't be unusual, it should be the norm. Cyclists are people too, and just like those who choose other forms of transport we should also be able to speak to friends and family as we travel. Infrastructure which doesn't make side-by-side cycling easy to do is inadequate infrastructure.

Cycle-path width is important to enable side-by-side cycling

A cycle-path in the UK. The red stripe supposedly serves as
a bidirectional cycle-path but it's not wide enough for sociable
side-by-side riding even in one direction so we are stretched
out and also using the pedestrian path. An example
of designed-in conflict.

Cycle-paths need to have sufficient width to allow cycling side-by-side. If it is necessary for cyclists to constantly adjust their position relative to each other in order to achieve part-time side-by-side cycling, this consumes a lot of extra effort.

Required widths
Unidirectional cycle-paths between 1.2 and 1.9 metres wide enforce single-file cycling. They also make overtaking of one cyclist by another difficult, resulting in cyclists wishing to use the road. Any width below 1.9 metres may as well be single-track as it's not really usable for side-by-side cycling.

The minimum unidirectional path width for comfortable side-by-side cycling is 2 metres. The extra width of a 2.5 m wide single direction path makes the experience more relaxing and more forgiving of error.

One of the oldest cycle-paths in Assen. It's 2.5 m wide, which
makes it suitable for one cyclist to pass in each direction, but
not wide enough for side-by-side cycling in all conditions.

Bidirectional cycle-paths between 2.5 and 3.2 m wide enforce single-file cycling whenever there are cyclists coming in the opposite direction. If two couples approach each other, both riding side-by-side then it's likely that both will switch to single-file, making any width between 2.5 m and 3.2 no better than the narrower width.

For this reason, the required width for a bidirectional cycle-path is a minimum of about 3.3 m. On such a path it's possible for two groups of cyclists both riding two-abreast to pass each other. Extra width makes the experience more pleasant and makes passing easier.

"Sharing" a path with pedestrians over a bridge in Assen
 results in conflict just as it does anywhere else.

Sharing with pedestrians causes conflict
Shared use paths do not work for efficient cycling because pedestrians are unpredictable and cause extra conflict.

In out of town areas the number of pedestrians may be small enough that a single path suffices, but inside towns it is almost never a good idea to ask cyclists and pedestrians to "share" because they will get in the way of one-another.

A separate path is required for each mode. The two paths together will still require fewer resources and take up less space than is routinely allocated for motor vehicles.

This works because that "road" isn't really a road at all. The
only motor vehicles which use this road are maintenance
vehicles or those which require access to the two domestic
properties visible in the photo.

Traffic levels are important
Cyclists should never be expected to ride on roads which have traffic levels so high that they cause cycling side-by-side to be a problem. In the Netherlands, through motor traffic is excluded from virtually all residential streets and city centre streets. Motor and cycling routes are unravelled from one-another and cyclists are close to 100% segregated from motor traffic.

Example of cycle-path widening to
nearly four metres at a junction.

Efficiency
By allowing two cyclists at a time to pass, and by allowing overtaking, cycle infrastructure which permits side-by-side cycling doubles the throughput of cycle-paths. If you're aim is true mass cycling in which everyone sees a bicycle as an efficient mode of transport for themselves, it's important to keep this efficiency as much as possible. That requires that cycle-paths widen at junctions and through corners.

Example photos

A bicycle road in Assen. Over five metres wide, and used by motor vehicles only for access. A direct route to the city centre along which sociable cycling is enabled and on which children can ride their own bikes in safety.

A 2.5 m wide unidirectional cycle-path from a suburb into the city centre from a different direction. Sociable cycling is enabled here without anyone feeling too cramped.

City centre street. This area allows motor vehicles access at particular times to make deliveries. Otherwise the "road" is a cycle-path through a pedestrianized area.

More of the city centre. Note the disability buggy being used as a bicycle. Also note the lighter coloured stripe of ridged tiles on the left of the photo which provides guidance for blind people.

Children, of course, have independence and can access the city centre area on their own bicycles.

Only the youngest children are transported on their parents' bicycles.

Youngsters in town on their own cycle side-by-side and talk to each other.

Another example of how people with disabilities benefit from good infrastructure. This is the same junction as shown in a small photo above where a unidirectional cycle-path widens to nearly four metres to accommodate cyclists at the junction. It is possible for cyclists to make this left turn while riding side-by-side and with all conflicting motor traffic stopped. The sign on the back of the tricycle indicates that that person has hearing difficulties and perhaps requires some guidance. Riding side by side allows this.

Continuing after they turn the corner. But note that the left bike is slightly over the centre line on this bidirectional cycle path, which is unfortunately only three metres wide and therefore of inadequate width for comfortable cycling in all conditions.

A 2.5 metre wide unidirectional cycle-path. Riding next to a friend is no problem at all here.

2.5 metres wide unidirectional cycle-path - a couple ride together with no difficulty.

A 3.8 metre wide bidirectional cycle-path. On this width, it's possible for two couples to comfortably pass each other while remaining side-by-side. The road on the right has two lanes for motor vehicles, each of 2.8 m in width. This may look like a wide cycle-path but note that the car driver and his passenger are still allocated more space than the cyclists.

In the countryside, a 3.5 metre wide cycle-path allows for cycling at a good speed without the difficulties which we had last week on much narrower cycle-paths in Germany in similar situations (see photo above).

Wide bidirectional cycle-path leading to a medium sized simultaneous green traffic-light junction. Side-by-side cycling is possible through the junction while all motor traffic is stopped. This type of junction is very efficient. Very many cyclists can cross the junction in all directions with one short green phase for cyclists.

The safest design of roundabouts for cycling also easily supports side-by-side riding, which again doubles the capacity of the junction for cyclists vs. how it would be if people had to ride single-file.

Demonstrating a four metre wide recreational cycle-path to a study tour group. No problem with side-by-side cycling here.

To finish, another photo of teenagers "misbehaving" by cycling five-abreast, but doing so in a manner which actually doesn't cause any problem at all. They can do this because this residential street, like almost all residential streets in Assen, is a non-through route for motorists and therefore there are almost never any motor vehicles with which to conflict. Rest assured that the boy on the pedestrian path rode back onto the road before he came close to the woman walking. He's already ahead of the other cyclists in this photo, preparing to make this move.

Two-abreast. Always. Everywhere.
Cyclists are the only group of road users routinely required to travel one-behind-the-other. There is no logic to this. No reason why side-by-side cycling should not always be encouraged. It's a matter of providing infrastructure which accommodates the requirement. Given that people like to pair up, regardless of which mode of transport they choose, the width required for cycling should always be considered to be the width of two people cycling side-by-side.

The cycle-path grid in Assen. Read more about this.

By "everywhere" I really do mean everywhere. There can be no gaps in a real cycling grid. Cyclists need to be able to make their entire journeys in safety.

If mass cycling is truly a target then cyclists must be allowed and even encouraged to ride side-by-side. Make cycling sociable, comfortable, safe and efficient, keep people on bikes well away from motor vehicles, and suddenly cycling becomes attractive.

Mark Treasure also blogged about side-by-side cycling today.

Eliminating the risk of "Dooring": Good cycle infrastructure design keeps cyclists out of the door zone and saves lives

Alberto Paulon is the second cyclist in the image. The collision happened  few video frames after this image. Read more about the incident here and here.

A few days ago on a road in Melbourne Australia a car door was opened. Alberto Paulon was cycling past the car at the time. He collided with the door, fell into the path of a truck and, sadly, he died. This tragedy could and should have been avoided.

Injuries and deaths due to "dooring" incidents are common around the world. Such incidents are sometimes viewed as an unfortunate side-effect of cycling, a problem requiring driver and/or cyclist education. Cyclists should not be under constant threat of death depending on how they position themselves on roads. There is no reason for roads to be designed in such a way that danger results from mistakes by their users when they could be designed to reduce the chance of mistakes becoming tragedies.

Door zone collisions can be almost entirely eliminated by changing the design of roads. This blog post illustrates how that can be done.

What's wrong with Sydney Road, Melbourne ?
The road on which this incident happened is in the Brunswick area of Melbourne, which has a high rate of cycling for an Australian city. Unfortunately, while the people who live in and use the shops in this area cycle quite frequently, the road is designed to serve those who are passing through in motor vehicles and no proper separate space has been found to keep cyclists safe.

A twenty-one metre wide road is more than wide enough to allow cycling in safety, and more than wide enough to provide cycling facilities which are free from the "door zone" problem. However this will require making a choice of what the purpose is of Sydney Road.

Is the purpose of Sydney Road to provide a route for trams, for motor cars and trucks or is it a local shopping street. While there is an attempt to make this road serve all types of users it is likely that it will not serve any of them well. Cyclists are amongst the most vulnerable users of any road and therefore amongst those users most likely to be injured or killed as a result of inadequate infrastructure.

A narrower road in Assen is much safer for cycling
The photos below come from Groningerstraat in Assen. Groningerstraat is a through road of approximately 18 metres wide. This makes it three metres narrower than Sydney Road in Melbourne. Despite its relative narrowness, Groningerstraat provides a very high quality environment in which to cycle. It's very convenient and also very safe. Dooring is almost impossible in Groningerstraat.

Layout of Groningerstraat. 18 m in total are divided between 1.8 m wide pedestrian paths, 2.2 m wide unidirectional cycle-paths, 2.8 m wide lanes for motor vehicles leaving space for green buffers, drainage and car parking. Thanks to Streetmix.

Safe, sociable side-by-side cycling is possible in both directions along Groningerstraat.

Car parking alternates from one side to the other along the length of the road. The pedestrian and cycling infrastructure is constant.

Angled "forgiving" kerbs are used so that a cyclist who makes a mistake and collides with the kerb will simply mount the pavement and continue for a while rather than being injured. Note that in this photo the cyclists shown are riding racing bicycles. It was taken during one of several large racing events which take place in Assen. Racing cyclists use cycle-paths in the Netherlands because there is no advantage to riding on the roads.

The drain provides a gap between parked cars and the cycle-path. It provides a significant part of the total space required to open a car door. In any case, the cycle-path is wide enough that two people can pass an open door side-by-side in safety. If there are more than two side-by-side then cyclists can mount the forgiving kerb should they have to. Remember that in the Netherlands it is usual to ride on the right so most people wouldn't come close to a car door and in any case there is no risk of falling in front of a motor vehicle if they crash for any reason.

There are several reasons why cycle-paths in this position do not create a dooring risk.

1. It is normal in the Netherlands to cycle on the right, and that places an individual cyclist as far away as possible from parked cars as they are passed. If you live in a "drive on the left" country like the UK you need to reverse this image.
   
2. The drain / buffer between parked cars and the cycle-path is wide enough for a significant proportion of the total car door side.
3. The cycle-paths are of a width which allows two cyclists passing side-by-side to very easily pass an open door in safety.
4. If a cyclist swerves away from the car then they may meet the kerb between the cycle-path and the pavement, but this is an angled "forgiving" kerb over which it is possible to cycle in safety so swerving won't result in injury.
5. The Netherlands is a left hand drive country. Therefore doors of cars parked in the conventional direction (the blue car above is parked against the flow) will most frequently be opened on the opposite side of the car from the cycle-path.
6. This is residential parking, not business parking. Therefore car movements are less frequent and car doors opened less often.
7. It is possible for cyclists to swerve, stop or even crash without any danger of being run into by a motor vehicle. This means that the very worst outcomes are avoided because riding straight into a car door won't result in a secondary collision involving another motor vehicle - the cause of the death in Melbourne.

Subjective safety principles require designing roads so that they are easy to use and forgiving of mistakes. These principles are credited with reducing the rate of injury and death on Dutch roads.

Other Dutch examples

A through road in Groningen with shops on both sides. Layout is similar to Groningerstraat, but this older example doesn't have a forgiving kerb or a gap between parked cars and the cycle-path. In-between parked cars there is additional danger to cyclists due to the metal posts shown above. Such posts should never be used to separate cycle-paths from roads. On colliding with such a post, a cyclist will almost certainly fall and that fall could be onto the road where a secondary collision with a motor vehicle is likely.

A cycle-lane in from Assen. Cycle-lanes present a greater dooring danger to cyclists than a cycle-path for several reasons: 1. A cyclist who rides into an opened door can fall in front of a moving vehicle. 2. dooring is more likely because every car has a driver, who sits on the side of the vehicle next to the cycle-lane, while only some cars have passengers (average occupancy being around 1.2). On-road cycle-lanes are not good cycling infrastructure. In this case there are factors which reduce the risk. A 0.5 m buffer between parked cars and the cycle-lane offers some space for a door to open and the 2 metre width of the cycle-lane offers some swerving space for cyclists. Narrower cycle-lanes without a gap between car and lane are far more risky. Also note that these cars are parked next to residences. Therefore they do not move so frequently as they would if parked by shops. At this location it's also of note that the motor vehicle lanes are just 2.8 m wide. This is wide enough for all vehicles, with careful design ensuring that it works even through pinch points.

This road leads through villages south of Assen, providing a safe route for cyclists to the city and beyond. Approximately 1 km of the route is shown in the video. On the other side of this road there is a canal. It would make no sense at all for cyclists to have to cross the road in order to ride in the opposite direction to that which I'm riding in so a bidirectional cycle-path is provided on one side only. This is older infrastructure so not ideal in several ways (narrow for a bidirectional path, not always a smooth surface) but it functions well and provides another example of how to deal with on-road parking and entrances.
Cyclist injuries are rising across the English speaking world

Tracey Gaudry from the Amy Gillett Foundation is quoted in the ABC news story as saying that The road toll is decreasing across the country on the whole except for bicycle riders. So what is happening is that the work that is being done to protect occupants of motor vehicles, not enough is being done to protect vulnerable road users, including bike riders." The same is true across most English speaking countries because while there has been a rise in the numbers of people cycling, there has not been any significant improvement in the safety for cyclists.

The blue line shows a clear rise
in cyclist injuries in the UK.

I have long been of the opinion that the concept of "safety in numbers" is a myth. Recent increases in injuries where the cycling infrastructure has not been improved would appear to confirm this (for example, recent statistics from the UK). The Netherlands has the best cyclist safety record in the world because the infrastructure is designed in a way which reduces the chance of cyclists being involved in collisions which could result in injury or death. Countries which do not follow this lead

Click here for details of the study tours.

Lots of "Sydney Roads", not many "Groningerstraats"
Many roads across the world have the same problem as does Sydney Road in Melbourne. Many of them could be improved by following the same engineering principles as are demonstrated above. On the other hand, there are relatively few roads like Groningerstraat in which these principles can be demonstrated. That is why this road has featured on our study tours since it was rebuilt in 2007.

Groningerstraat also demonstrates other examples of good design, such as an extremely safe and convenient traffic light junction and a very well designed and safe side-road crossing. Assen has many examples of good infrastructure which extend well past this one road. To see and learn from these and other examples of good design as well as to have problems caused by bad designs pointed out, book a study tour.

The "Dutch Reach" ?
What has become known as the "Dutch Reach" is the idea of teaching drivers that they should open car doors with the hand furthest from the door in order that they turn and have a better chance of noticing cyclists. This is claimed to reduce the incidence of dooring. It may indeed have a small effect, but it's mostly a distraction. The "Dutch Reach" is not the main thing which keeps cyclists safe from being injured by cycling into car doors in the Netherlands.  The main thing which keeps cyclists safe is the design of infrastructure which makes dooring nearly impossible. That is what is described above.

There is a campaign in Melbourne which has been calling for a cycle-path along Sydney Road for some time.

City centre streets. Perfect for children on their own bicycles, if the city is truly planned for cycling. Cargo bikes shouldn't be required.

Something which people who visit Assen often notice is the lack of cargo-bikes. Somehow an expectation has grown up that cargo bikes are the way of transporting children by bicycle. Actually, children have their own legs and really should be able to use them to transport themselves as soon as they have the ability to ride a bicycle. This of course is only possible if the infrastructure is very very good, and over most of this city that is indeed the case. It wasn't always like this, but motor vehicles were removed from the centre several years ago and that left behind conditions where everyone is safe.

The photos below were taken within ten minutes a little after three o'clock on an afternoon a couple of weeks ago:

All ages and abilities served by one type of infrastructure. The youngest daughter in this family rides on the front of Mum's bike while her slightly older sister rides her own bike. They're heading directly towards the city centre. Directly towards the same streets as shown in the following photos. It's not unusual to see children this young cycling to the city centre. A comprehensive grid of very high quality infrastructure makes this possible.

The city centre streets are used by bicycle by people of all ages. The woman in the centre has more experience, but lots of experience isn't required to be safe here. The youngsters on the right are already able to make their way through the city without an adult to accompany them.

Of course some children are accompanied by parents. These two are heading towards a large square in the middle of the city which was once a car-park.

The youngest child sits on Dad's bike while her older sister rides her own bike.

Mother and son.

Young teenagers have complete independence. This group rode through together. Presumably the lessons for the day had ended. The light grey concrete on the left of the cyclists is textured to help blind people find their way. Paving like this is laid throughout the city centre.

Another mother and son. The mother's bike has a fold down child-seat on the back, which is possibly used sometimes for a younger sibling.

They're all moving in the same direction, but they're not all looking in the same direction. Cycling is very social in the city centre. People are always looking out for their friends and family. A lot of smiles, a lot of waves.

More youngsters riding home from school together. The city centre streets make a good route to many locations.

Teenagers attending secondary school (age 12 upwards) are likely to have further to travel. 

Eating while cycling and riding no hands. These are comparatively safe things to do when there are no cars on city centre streets.

Mum indicates a right turn. The children also will turn up onto the forgiving sloped kerb .

Teens again, riding sociably side by side.

Very young children ride on the back of their parents' bikes. But those who cycle on their own bike are often also very young.

Where have the cars gone ?

Red dots show the locations which feature in the photos
Traffic lights are no longer needed because through
traffic has been removed. The car park no longer exists.
There are now zebra crossings to make it easier for
pedestrians to cross the "road" for bikes.

The photos above show very typical views of the centre of Assen in 2014. Many other Dutch cities look similar. However, it wasn't always like this.

In the 1970s, the number of children being killed on the roads reached a peak. Cycling was in decline in the Netherlands at that time.

Assen, like other cities, was full of motor vehicles. Cars, buses and trucks dominated the city centre streets. Cyclists who remained on these streets were under pressure. The situation was much like that of many cities now. There was "no space for cycling infrastructure" and car parks were full.

If Assen had continued on the path which the city was on, it's unlikely that people would cycle so much in the city as they do now.

Pedestrian zone.
Cycling allowed
on given routes.
Note generous
delivery times.

The problems in the centre of the city were turned around by a second revolution which returned old streets which pre-date motor vehicles to people rather than allowing the problems due to allowing motor vehicles to dominate them to grow.

The city centre area is now a large pedestrian zone. What looks like a road in all the photos above (except the first one) is actually a stripe through the pedestrian zone on which cycling is permitted. This is a design which works very well because it is familiar. "Road" for bikes, "pavement" for pedestrians result in no clashes between cyclists and pedestrians within this pedestrianized area. Signage at each entrance to the pedestrian zone points out this status.

Cycling and walking are the most popular means of transport for shoppers in Assen and these are the modes which are best catered for in the city centre.

Of course it's not just the city centre which has cycling infrastructure. An extensive and fine-grained grid of high quality infrastructure stretches across the entire city so that no-one has to cycle in conditions which are not subjectively safe. This is the only way of making cycling accessible to everyone.

When our children were young we still
lived in the UK. The streets were not
safe enough for them to ride their own
bikes so we used this Ken Rogers trike
with child seats. It worked well, but
we wouldn't have needed it in Assen.

What about parents ?
In many places, people who didn't bother with a car before they had children find that they need one once they have children. Of course it is in many ways better if people switch to using cargo bikes to carry their children rather than using a car, however the experience of the children themselves is not so different if they're transported by a parent with a bicycle rather than being transported by a parent with a car.

A high percentage of parents using cargo bikes to transport their children is better than having the same parents driving cars, but while a growing number of cargo bikes might indicate a growing confidence amongst parents it should be seen as a step in the right direction but not as an end in itself.

There are quite a lot of cargo bikes in
Assen. They're used for many other
reasons than to transport children.

Why not cargo bikes ?
So long as they're used for carrying cargo, there's nothing wrong with cargo-bikes at all. There's also nothing wrong with them for carrying small children.

It is only when cargo bikes are seen as a solution for carrying children who are old enough to ride their own bikes (i.e. 4+) that this indicates a problem. The problem is not with the bikes or their riders but with the environment for cycling.

If parents don't think that the local cycling infrastructure is sufficiently safe for their children to have control over their own movement then this indicates that the infrastructure is sub-standard. Children should have conditions safe enough that they can have control over their own movement and not have to rely upon their parents for lifts, either by bike or by car.

Mother of three in Groningen

Where the cycling infrastructure is very good, cargo bikes are relatively rare and mostly used for carrying cargo. It's better for parents and for children if children can be given the freedom to control their own movement.

I'm not criticizing anyone for using a cargo bike to transport their children. People who do this in difficult environments should be applauded for making a positive choice which is not always rewarded by society. We made a similar choice when we lived in the UK and our children were small. We first used a tricycle and later moved on to trailerbikes (also uncommon in the Netherlands for the same reason). It was not always easy to do this because other parents could be quite critical and drivers were sometimes quite aggressive around our children.

It's not always so good as this in the Netherlands
Cities across the Netherlands vary in how easy it is for everyone to ride bicycles. For instance:

• Amsterdam has the lowest rate of cycling to school of any city in the Netherlands, closely followed by Den Haag and Rotterdam.
• Groningen has a marvellous centre, but hostile cycling conditions can be found a short distance north from the centre.
• Assen is also not perfect. In particular, a new dangerous junction south of the city centre makes access difficult for vulnerable people and recently there have been several design mistakes made in new infrastructure.

The Netherlands is still far and away the most successful country on earth at encouraging people to cycle, and at encouraging people to let their children cycle. Assen is a stand-out city even within the Netherlands. But I always warn that you should never assume that this country always gets everything right.

A truly high cycling modal share requires that everyone should be able to cycle everywhere. That is what true mass cycling is all about.