Mark Brussel has a background in Civil Engineering (Delft University of Technology). He has over 25 years experience in the planning and engineering of urban infrastructure, with a focus on developing countries. In the last 20 years he has specialised in the application of Geographic Information Science in urban infrastructure systems. He has developed specific expertise on spatial analytical methods to deal with questions of equitable and sustainable infrastructure provision in urban areas. Such questions deal with issues of spatial variation, spatial interaction, network design and performance, resource allocation and asset management. In support of this work, he has developed expertise in GIS data models and analytical routines for planning and operation & maintenance of infrastructure networks. His current research interests are in spatial and social equity of infrastructure systems, spatial decision support in infrastructure planning, land use transport integration, risk in infrastructure systems and sustainable transport (public transport and cycling in particular).