In many neighbourhoods, inhabitants are disturbed by speeding traffic in their street. Often one feels powerless because no action can be taken. There is no evidence and often we do not know who was speeding. Can we use technology to allow the inhabitants to measure the speed of passing traffic? If so, what will they do with this information? Share it amongst each other, or with the police? This project addressed both the technical challenge and the social impact. We collaborated with ICX – The Hague International Center for Civic Hacks.