Street Design Indicator

Attention to the value and impact of urban design quality and the street environment has increased over the past decade – rebalancing the dominance of traffic engineering. The importance of the pedestrian journey is particularly important in reducing social exclusion and removing barriers to access and public transport usage, not least for groups who are more walking reliant, notably older and younger people.


Drawing on good practice and techniques developed from various accessibility, crime prevention and design quality guidance and tools, the AUNT-SUE street design indicator (SDI) widens the scope to perceptual factors such as fear of crime, natural surveillance, key amenities such as WCs, furniture, signage and legibility, and uses a more comprehensive mapping of neighbourhoods, communities and routes. This provides a more in depth context for identifying at risk and excluded users, and relates this to the physical and journey environment. This also enables a more systematic assessment to be undertaken at transport and facility planning – as well as urban design and street care – levels.


Please see right column on this page for further information on SDI.

Key Documents



E: Graeme Evans


Research led by

LMet University -
Cities Institute