Jakarta, the capital of Indonesia, is often listed among the world's most polluted cities. To combat this issue and promote healthier living, the city implements a "car free day" every Sunday morning, from 6 to 10 o'clock. During this time, major roads in the city center are closed to motorized vehicles, allowing for a temporary shift in urban life. This initiative aims to reduce air pollution and encourage physical activity by creating a space for pedestrians, cyclists, and runners. The city center, which is usually congested with traffic and plagued by poor air quality, becomes a hub of activity as people gather for exercise, leisure, and community events. The car free day is part of a broader effort to improve urban mobility and environmental conditions in Jakarta. By temporarily removing cars from the streets, the city hopes to raise awareness about the impact of vehicle emissions on public health and the environment. While the initiative has been praised for its positive effects on air quality and community engagement, it also highlights the ongoing challenges Jakarta faces in managing traffic and pollution. The car free day remains a symbolic and practical step toward a more sustainable urban future.