It's time for America to move beyond zoning, argues city planner M. Nolan Gray in Arbitrary Lines: How Zoning Broke the American City and How to Fix It. With lively explanations, Gray shows why zoning abolition is a necessary--if not sufficient--condition for building more affordable, vibrant, equitable, and sustainable cities. Gray lays the groundwork for this ambitious cause by clearing up common misconceptions about how American cities regulate growth and examining four contemporary critiques of zoning (its role in increasing housing costs, restricting growth in our most productive cities, institutionalizing racial and economic segregation, and mandating sprawl). He sets out some of the efforts currently underway to reform zoning and charts how land-use regulation might work in the post-zoning American city. Arbitrary Lines is an invitation to rethink the rules that will continue to shape American life--where we may live or work, who we may encounter, how we may travel. If the task seems daunting, the good news is that we have nowhere to go but up