GIS and CAD tools, training, large scale 3d network analysisCardiff University Sustainable Places Research Institute
sDNA is world leading spatial network analysis software, compatible with both GIS and CAD and using industry standard network representation.  We compute accessibility and predict flows of pedestrians, cyclists, vehicles and public transport users; these inform models of health, community cohesion, land values, town centre vitality, land use, accidents and crime.  We provide a simpler alternative to transport models, particularly for sustainable transport.

Research collaborators
Tongji University College of Architecture and Urban Planning



Recent Posts

sDNA modelling accessibility for pedestrians with disabilities

Mr Richard Price completed his MSc dissertation, supervised by Dr Kate Boyer, “Applying spatial analysis modelling to the study of pedestrian networks around railway stations in South East Wales”. The analysis uses network modelling of active travel data to distinguish … Continue reading

sDNA Public Transport features

In 2016 on request of Tongji University we implemented a number of features to assist in analysis of public transport networks. An overview of these (demonstrated on the enormous bus network of Shanghai) is now available here.

Smart Cities Cardiff – Business Council for Sustainable Development

Crispin spoke at the BCSD Smart Cities Cardiff event this month. Slides for his talk, “Spatial Network Analysis, Smarter Walking and Cycling & the Role of the Private Sector” are available here.  

sDNA Cycling Models in Journal of Transport Geography

Dr Crispin Cooper’s paper “Using spatial network analysis to model pedal cycle flows, risk and mode choice” has just been published in the Journal of Transport Geography. This demonstrates use of cycling betweenness in sDNA to simulate cyclist flows based on … Continue reading

sDNA collaborators at Arup win CIHT award

Congratulations to Ringo Chan and team at Arup Cardiff for project “Sustainable Access to Newport City Centre” – winner of the Chartered Institution of Highways & Transportation’s Small Transportation Research & Studies Award 2016. The judging panel praised their commitment … Continue reading

sDNA at Foss4G Cymru

The QGIS sDNA plugin received a warm reception at the QGIS user conference, Foss4G Cymru 2016. Slides available here.

European Transport Conference 2016

The latest sDNA models of cyclist flows and mode choice were presented at the European Transport Conference 2016, UAB, Barcelona. The paper describes use of machine learning techniques to combine multiple sDNA models to fit observed data, incorporate heterogeneous behaviours, … Continue reading

Stable release of sDNA version 3: QGIS support and active travel models

We are pleased to announce that sDNA version 3.4.5 is considered stable! While sDNA remains very general purpose software, sDNA3 also includes the latest active travel models from our ongoing research projects. Finally, we have incorporated feedback from our external … Continue reading

Release of Cardiff Cycle Models

To assist with the cycle planning efforts currently underway in Cardiff (Active Travel Integrated Network Map, and the review of Enfys) we are making public our current cycle model outputs.  Cardiff has been sDNA’s primary test case for the development … Continue reading

sDNA at Wales Planning Conference 2016

In partnership with Sustrans, Crispin will be delivering two workshops on active travel planning next week at the RTPI Cymru Wales Planning Conference 2016. Under the Active Travel Act, Welsh Local Authorities are required to produce Integrated Network Maps detailing … Continue reading