| Summary: | Foot trees, sidewalk and pedestrians: towards a sustainable combination ? Street trees are managed in Paris by the Green spaces office. The foot tree depends on three more offices: the Public road network, the Urban waste management and the Town planning. This shared management is more complex and challenges the ideal of sustainable development. Tree grates are risky for pedestrians and their absence increase trampling which is harmful for trees. Other arrangements like greening or planting are promoted as they could also participate to an urban greenway. But weeds mean dirt and dereliction for some people and make cleaning difficult. The Urban waste management prefers another floor covering, permeable but inert, called “stabilisé”. To set up a management which takes into account the various points of view, a coordination of the public space was created to arbitrate choices according to the use of streets and the picture weeds reflect.
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