'Good segregation means safer streets for all, not just cyclists'

A well designed and implemented segregated route means improved safety not only for cyclists but pedestrians too, believes Neil Brownbridge

A family cycle day was held to celebrate the opening of the Frascati Road improvement scheme in Blackrock, Dublin

A family cycle day was held to celebrate the opening of the Frascati Road improvement scheme in Blackrock, Dublin

To segregate or not to segregate is the question facing many urban cycle route planners and design engineers in the UK and Ireland. The conventional wisdom is that segregation is necessary if cycling is to become an attractive and safer option for a wider range of people who don’t currently cycle, as well as catering for rising numbers of cyclists on the transport network.

Proof of this is the correlation between widespread implementation of segregated cycle routes, in northern European cities in particular, and the significant increases in cycle flows. However, it is not always quite as straightforward as this.

First, there are a number of different types of segregation, each with different merits. These include kerb segregated cycle tracks, stepped cycle tracks, hybrid cycle tracks and ‘light’ segregation. Then there is the question of whether cycle routes should be one-way with flow on both sides of the road, or two-way on one side of the road. Deciding on the most appropriate method of segregation is an important early decision and needs to be thought through.

Second, there is the cost implication and, frequently, the impact on general traffic capacity to consider. Providing full segregation does not come cheap given the drainage and, often, the associated highway/footway remodelling requirements. Reallocation of road space typically requires political support and bravery and a good deal of consultation.

Third, there are specific design challenges associated with segregation. These include dealing with bus stops, side roads and ensuring correct provision for cyclists (and pedestrians) at traffic signal controlled junctions.

None of theses challenges are insurmountable. When well designed and implemented, the outcome of a good segregation scheme really can be transformational in bringing about significant increases in cycle flows and mode shift. Furthermore, and as an indirect benefit, cycle segregation schemes offer an opportunity to provide a better environment for pedestrians, both in terms of streetscape enhancement and also a sense of increased safety and less passive pollution as vehicular traffic is moved further way from the footway area.

At Cycle City Active City AECOM and client partners will be discussing the challenges and opportunities of rolling out segregated cycle routes in London, Greater Manchester, Dublin and Newcastle.

Neil Brownbridge is regional director at AECOM