A couple of weeks back the Design Council Newsletter re-published some work from 2014, looking at how Hackney had become one of the most liveable boroughs in London. This is evidenced by an increase in people cycling to work and a decline in those driving – both around or over 10%.
One of the reasons set out for this change in behaviour is the success of policies implemented over the last 10 years, which include re-designing residential streets. In particular the use of “filtered permeability” – using bollards to make some streets only accessible to pedestrians and cyclists – is described as part of this achievement.
Increasing active travel share and decreasing private car use is very positive, however, closing streets immediately raises questions around the wider impacts.
In a very quick summary there are three major issues with filtered permeability:
- Fragmented networks increase congestion and lengthen car trips
- Increased likelihood of air pollution in higher density, mixed use areas
- Reduced levels of natural surveillance impact personal safety
These points are expanded in the post below: Read More