Railways:
total:
5,000 km
standard gauge:
4,095 km 1.435-m gauge (3,500 km electrified; 159 km double track)
narrow gauge:
665 km 0.762-m gauge
dual gauge:
240 km 1.435-m and 1.600-m (*A) gauges (four rails interlaced) (1996 est.)
Note *A: check if 1.600m is indeed 1.524m (2004A12).
City with metro system: Pyongyang, reportedly the deepest of the world, more than 100 m ([1], [1]).
Highways:
total:
31,200 km
paved:
1,997 km
unpaved:
29,203 km (1996 est.)
Waterways: 2,253 km; mostly navigable by small craft only
Pipelines: crude oil 37 km; petroleum product 180 km
Ports and harbors: Ch'ongjin, Haeju, Hungnam (Hamhung), Kimch'aek, Kosong, Najin, Namp'o, Sinuiju, Songnim, Sonbong (formerly Unggi), Ungsang, Wonsan
Merchant marine:
total:
107 ships (1,000 GRT or over) totaling 675,609 GRT/937,477 DWT
ships by type:
bulk 5, cargo 91, combination bulk 1, multi-functional large load carrier 1, passenger 2, passenger/cargo 1, petroleum tanker 4, short-sea passenger 2 (1999 est.)
Airports: 49 (1994 est.)
Airports - with paved runways:
total:
22
over 3,047 m:
2
2,438 to 3,047 m:
15
1,524 to 2,437 m:
2
914 to 1,523 m:
1
under 914 m:
2 (1994 est.)
Airports - with unpaved runways:
total:
27
2,438 to 3,047 m:
4
1,524 to 2,437 m:
5
914 to 1,523 m:
12
under 914 m:
6 (1994 est.)