The tram route 4 in Brussels, Belgium is a tram route operated by the STIB/MIVB, which connects the Stalle car park in the southern municipality of Uccle to the Brussels-North railway station in the municipality of Schaerbeek.[1] It was created on July 2, 2007 as a new route between the Esplanade and the Stalle car park, via the North-South axis tunnel. It is since then with tram route 3 one of the only 2 tram routes to service the North-South axis tunnel. On August 31, 2009 the route was shortened with a new terminus at the Brussels-North railway station, while the tram route 3 was expanded between Brussels-North and Esplanade.
The route crosses the North-South axis tunnel from the Brussels-North railway station to the Albert premetro station. The tunnel crosses the municipalities of Schaerbeek, Saint-Josse-ten-Noode, City of Brussels, Saint-Gilles and Forest. It then rides along the Avenue Albert/Albertlaan which is a part of the Brussels greater ring road up to the Vanderkindere crossroad in the municipality of Uccle. There, the tram route uses the Avenue Brugmann/Brugmannlaan which then becomes the Rue de Stalle/Stallestraat. At the end of that street lies the tram terminus next to the Stalle car park.
The route is not serviced after 8.00 pm and is replaced by tram route 33.