Seoul to roll out innovative road technologies stocking 0 50 2021.10.15 14:34 https://youtu.be/LQE5kBkA1OU + 55 서울 자동차도로에 미세먼지 저감 신기술 연내 적용 Seoul City plans to roll out new state-of-the-art technologies to make its roads safer and more environmentally ...