My research forms part of the sustainable development research domain. The political commitment is partially reflected by local urban policies. In this case transport is a recursive question. The aim of the cities is to lessen the negative impact caused by the transport of goods and people. They try to reduce the domination of the city by cars; decrease distances travelled by polluting means of transportation and propose alternative solutions. These policies affect the morphology of urban space and change it. This can bring out new risks. The RED project (Risques Emergents de la mobilit´e Durable) analyses in detail these various risks. I am interested on the impact of the sustainable mobility system on citizens’ daily life by focusing on urban public transport means and soft mobility infrastructure. My goal is to create a GIS measurement and cartography tool of ergonomics of access to everyday resources. Its aim is to take into account many factors which can encourage or discourage people to adopt sustainable mobility such as: accessibility, space ergonomics like defined by T.Saint-Gerard, the social factor and the quality of urban space. This tool will be applied to selected areas at first and then, after some investigations, to the whole Eurom´etropole of Strasbourg. This statistical and mapping tool could be used as a support to take decisions which help for the detection of socio-spatial disparity, the optimization of the supply of sustainable mobility infrastructure at lower cost, and the simulation of the impact of changes in infrastructure on the life of everyday citizens.