Public transportation improves public health through three primary mechanisms: increased physical activity, enhanced safety, and reduced environmental stress. Transit users are significantly more active than drivers, getting an average of 19 minutes of physical activity per day by walking to and from stops, which helps lower the risks of obesity, diabetes, and heart disease. Statistically, public transit is also much safer; bus-related accidents have roughly one-twentieth the fatality rate of automobile travel, preventing thousands of motor-vehicle-related injuries every year. Environmentally, buses and trains reduce the number of single-occupancy vehicles on the road, leading to lower emissions of harmful pollutants like nitrogen oxides and particulate matter, which are linked to respiratory issues and asthma. Beyond physical health, public transit supports mental well-being by reducing the stress associated with driving in traffic and providing essential access to healthcare, social interactions, and healthy food for those who cannot or choose not to drive. By saving households thousands of dollars annually on car ownership, it also leaves families with more disposable income for medical services and better living conditions, creating a holistic improvement in community-level health outcomes.