One promising trend in urban planning is the push from a growing number of U.S. cities to reduce minimum parking requirements for new developments. As the name suggests, parking minimums require developers to build a certain amount of spaces, regardless of whether a community wants or needs them. The result is an excess of parking that can lead to more vehicle pollution, worsen traffic congestion, and drive up housing costs. In some cases, the steep cost of building parking prevents a project from moving forward at all.