The Gyeongbu Expressway (Korean: 경부 고속도로; Gyeongbu Gosok Doro) (Asian Highway Network AH1 AH1) is the second oldest and most heavily travelled expressway in South Korea, connecting Seoul to Suwon, Daejeon, Gumi, Daegu, and Busan. It has the route number 1, signifying its role as South Korea's most important expressway. The entire length from Seoul to Busan is 416 km and the posted speed limit is 100 km/h, enforced primarily by speed cameras.
Read more about Gyeongbu Expressway: History, List of Facilities