Total of 3536 kilometres, (2563 km double track (1998)), of which 2950 km are electrified, mainly at 3000 volts DC and 351 km at 25 kV 50 Hz AC (2004) and all on standard gauge of 1.435 m. In 2004 the NMBS/SNCB carried 178,4 million passengers a total of 8676 million passenger-kilometres. NMBS/SNCB is the National Railway Company of Belgium.
Due to the high population density, operations are relatively profitable, so tickets are cheap and the frequency of services is high. The NMBS/SNCB is permanently updating its rolling stock.
The network currently includes two high speed lines suitable for 300 km/h traffic: HSL 1 runs from just south of Brussels to the French border, where it continues to Paris and Lille (and London beyond that), HSL 2 runs from Leuven to Liège. HSL 3 will run from Liège to the German border near Aachen and HSL 4 will run from Antwerpen to Rotterdam (in The Netherlands). HSL 4 and HSL 3 are currently under construction and will be ready in April 2007 and at the end of 2007 respectively. Both lines are equipped with ERTMS (ETCS level 2 + GSM-R, access and fall-back in level 1).
Electrification is at 3 kV DC, with the exception of the new high-speed lines, and of two recently electrified lines in the south of the country which are at 25 kV AC.
Trains, unlike road traffic, run on the left.
In Belgium an extensive system of tram-like local railways called Vicinal or Buurtspoor lines crossed the country in the first half of the XIXth century, and had a greater route kilometre length than the main-line railway system. The only survivors of the Vicinal system are the Kusttram and some sections of the Charleroi metro. Urban tram networks exist in Antwerp, Ghent and Brussels, and are gradually being extended.
Metro systems in cities:
Light rail systems in cities:
Other lines:
Some heavy metro infrastructures were built in Brussels, Antwerp and the Charleroi area, but these are currently used by light rail vehicles, and their conversion to full metro is not envisaged at present due to lack of funds.
The highways in Belgium are marked with a letter A and a number. Most often however the European numbering system for the international E-road network is used. There is however not always a one-on-one relationship between the two numbering systems along the whole length of the highways.
Some major examples are:
The principal national roads fan out from Brussels, numbered in clockwise order:
Secondary national roads intersect these.
National roads have an N plus 1, 2 or 3 digits. National roads numbered with 3 digits are provincial roads, their first number indicating the province:
(one of the world's busiest ports)| 2003 | unloaded | loaded | total |
| Total volume in tonnes | 77,596,356 | 65,278,156 | 142,874,512 |
| Container volume in TEU | 2,642,338 | 2,803,100 | 5,445,437 |
| Barge traffic in tonnes | 33,990,726 | 42,623,875 | 76,614,601 |
| 2004 | unloaded | loaded | total |
| Total volume in tonnes | 83,109,485 | 69,217,080 | 152,326,565 |
| Container volume in TEU | 2,946,297 | 3,117,450 | 6,063,746 |
| Barge traffic in tonnes | 35,969,512 | 45,969,918 | 81,939,430 |
| 2005 | unloaded | loaded | total |
| Total volume in tonnes | 87,077,092 | 72,977,273 | 160,054,365 |
| Container volume in TEU | 3,150,351 | 3,331,678 | 6,482,029 |
| Barge traffic in tonnes | 38,081,664 | 46,219,052 | 84,300,716 |
| Rail traffic in tonnes | 8,153,297 | 15,158,425 | 23,311,722 |
(one of the busiest in Europe)

(also accessible for ocean-going ships)
(one of the busiest in Europe)