Inclusive cycling infrastructure is often described as being suitable for ‘8-80’ – for the young as well as the old. It’s a good philosophy. However, it is not quite adequate, in and of itself, to capture what’s required for infrastructure to be of a suitably high standard.

For instance, a good deal of substandard infrastructure could reasonably be described as 8-80. Wibbly-wobbly crap on pavements, for instance, can be negotiated by eight year olds, as well as eighty year olds.

This isn’t, however, this kind of infrastructure that many people would actually choose to use. Nonsense like this gets avoided by people who are able (although not necessarily willing) to cycle with motor traffic.

So ‘8-80’ isn’t quite sufficient, in and of itself. What’s required is infrastructure that is suitable for the young and the old, as well as the fast, the confident and the experienced. Infrastructure, for instance, that’s suitable for 8-80, as well as for a team time trial.

The cycle path in the picture above is one that can obviously accommodate high speed cycling, but at the same time it is also suitable for a full range of other cycling types, the slow; the young; the old.

A similar version of this test was proposed by Joe Dunckley – a ‘Boris test’.

Need an addition to the 8yo kid test of cycling schemes. The Boris test: would Boris just keep his wits about him + continue using the road? — Joe Dunckley (@steinsky) July 9, 2014

That is, infrastructure has to be good enough for someone like Boris Johnson – who habitually disparages substandard off-carriageway infrastructure, while voicing his preference for mixing it with motor traffic on busy roads – to choose to use it, rather than opting for the motor traffic alternative.

Cycling infrastructure should accommodate all these people, on the same singular design. It should offer comfort, safety and attractiveness, as well as being direct and convenient. This is uniformity of provision, well explained by David Arditti –

We know from looking at the systems of cycling infrastructure in the most successful cycling nations and cities that they design one network for cyclists, and only one, to one set of standards. They treat cycling as we treat motoring and walking, that is, as an essentially homogeneous activity facilitated on one network, built to one set of standards, for all those who do it. They recognise that cyclists, whether they be young or old, fast or slow, able-bodied or disabled, all need essentially the same things, in terms of a quality network that gives priority, directness, and both actual and subjective safety. There is no question of us having a network of roads for “less confident drivers” and a different one for “fast and advanced motorists”, and this is how the places that get cycling right also treat cycling. They build cycle lanes, paths and tracks that work of all types of cyclists and all abilities at the same time, and have sufficient capacity to cope with all, taking the attitude that if it’s not safe enough for young children, it won’t be safe enough for anyone, and if it’s not convenient enough for commuters in a hurry, it won’t be an attractive option to anyone. They build up to a common standard that works for all, and don’t say “If you don’t like it, there’s always the busy, dangerous main road”.

Uniformity of provision is tremendously important, because its alternative – dual provision – essentially involves designing for failure. Dual provision means building something that, at the design stage, it is already accepted that people will not use. It involves building, for instance, shared use pavements that the designer knows will be avoided by people who prefer to cycle on the carriageway, because the shared use pavement is too inconvenient, awkward, or slow. Equally, it involves catering for people on the carriageway while acknowledging that many people simply won’t want to use that same carriageway because it is too intimidating, or hostile. We still continue to build infrastructure according to this failed philosophy, at tremendous cost.

Accommodating fast cycling doesn’t mean ignoring the needs of the slow, or the less confident, or the nervous. In fact, quite the opposite – cycling infrastructure designed for speed means more convenience for everyone. It means an absence of sharp corners, of barriers, of ‘shared use’ in appropriate circumstances, of pedestrian-specific design in general. If it’s good enough to ride a bicycle fast on it, then it will undoubtedly carry benefits for slower users, even those who are not on bicycles.

That’s why aiming for 8-80, although admirable, isn’t good enough by itself. It needs to be good enough for everyone to want to use it.