Every street is the result of numerous choices and assumptions. How a community allocates space on its roadways is the truest reflection of its priorities, but design choices don’t always align with stated preferences and policies. Furthermore, the trade-offs between different ways to organize space are often difficult to articulate to the public and other stakeholders. Private car parking or a dedicated bus lane? Landscaped median or protected cycle lane? Support the success of local businesses or reduce carbon emissions?