The P'yŏngbu Line is an electrified standard-gauge trunk line of the North Korean State Railway running from P'yŏngyang to Kaesŏng.The line is the southern continuation of the P'yŏngŭi Line. It theoretically connects P'yŏngyang to Busan in South Korea but, in reality, it ends at Kaesong because of the Korean Demilitarized Zone.