Transit-oriented development (TOD) is a popular way of building communities that are close-knit, pedestrian-friendly, and well-designed. It helps reduce traffic congestion and increase ridership on public transportation. While urban areas are great for TOD, they can be expensive and complicated to develop. Suburban areas are easier for developers but often not transit-friendly. To make suburbs support transit, they need more density, mixed uses, and pedestrian-friendly features. Many successful TOD projects have been studied, showing that the concept is evolving and still effective.