Urban mobility justice has been a growing concern worldwide due to the car-dominant planning process of urban areas, which has excluded certain groups, especially vulnerable ones, from safe and accessible urban streets. One of the most marginalized groups among these is children, whose limited autonomy and physical fragility make them highly susceptible to mobility-related risks. In this regard, designing streets that prioritize children’s needs inherently benefits other vulnerable users, including people with reduced mobility, the elderly, and caregivers with strollers, by ensuring safe, accessible, and inclusive infrastructure for all. In this context, promoting active mobility is crucial for equitable urban development, which benefits everyone.