In "Cruzar la Calle", Alma Maritano argues that crossing the street is not just a simple act of movement, but a complex process that involves social, cultural, and environmental factors. The book explores how urban planning and design can either facilitate or hinder pedestrian mobility, particularly for vulnerable populations such as children, older adults, and people with disabilities. Maritano's work is based on extensive research, including case studies, surveys, and interviews with pedestrians, urban planners, and policymakers.