#to-write # Introduction Applaud Jakarta's plan to introduce Car Free Night from 22:00 to cater late night exercise of Jakartans. The reason is to lower carbon emission, and to incentivize exercise. How many are doing exercise at night? Should the government encourage, or even, incentivize late night exercise? The biology might not agree with it. The pollution, might even worse. What's lacking: attunement to biology and health. The source of emissions. Expansion of CFD to five township around Jakarta. Cite that pollution is higher at night—do you really want to embrace the tradeoff? Does the benefit outweighs the cost? # Healthy City Concept - Healthy City concept by WHO - C40 - Recent Economist publication where Jakarta is livable or no. One of the metrics measured is pollution. As with other countries in South Asia, Jakarta is average. # Circadian rhythm - Why physical activities at night is detrimental to he alth. - Is it better at night—or not at all? - Growing body of evidence in integrating circadian rhytm and lighting into healthcare # Proposal 1. Etiology: Address key drivers of air pollution in Jakarta beyond transportation sector. 1. ![[@pineoPromotingHealthyCities2018#Overall value of BRE HCI]] 2. Second, address other sources that might deter the purpose: such as open waste burning, outdoor smoking 2. Protect: proper, real-time data measurement of PM2.5. Adopt technology, [[air pollution alert systems]] to deter citizens from doing physical activity in toxic air, ensure lighting, prevent crime 1. An additional approach to protect public health is to implement [[air pollution alert systems]] that warn susceptible individuals on high air pollution days so that they may modify their behaviour (e.g. stay indoors, delay physical activity) on that day to reduce their personal exposure. 2. Prevent and minimize road injuries during the time 3. Encourage [[Active commuting]] , integrated public transportation, particularly the first and last miles from five township around Jakarta. 4. Future: Integrate latest biomedical science into policy consideration, particularly precision policy in public health.