Sustainable transportation is a direct expression of sustainable development in the transport sector. The urban transport planning must consider the four pillars of sustainability: economic, social, environmental and institutional. Casablanca, like many cities in developing countries experiencing a rapid urban growth with a great difficulty to ensure the urban transport services. Therefore, there is a low part of public transportation in the urban mobility, against a big demand on the private vehicle beside a significant presence of informal transport. This complicates the planning effort maintained by the actors in the city that provide significant efforts to ensure the operational management of urban transport. This work aims to strengthen the position of sustainability in the planning process undertaken in Casablanca. Thus, we propose to analyze, compare, and choose a set of sustainable mobility indicators adapted to the context of Casablanca including offer, demand, economic, social, environmental and governance indicators. These selected indicators are also a tool for data collection and measurement on sustainable mobility in the urban area of Casablanca. We also use a Geographical Information System environment in order to integrate public transport data and offer maps in addition to population data into a Geodatabase. Spatial analysis helps us to compute a set of selected indicators especially those related to the offer and social issues. This indicators system was used, to show the unsustainability of the urban transport system of Casablanca.