Bru heavy metros and underground tram sections sometimes have platforms on both sides to allow simultaneous exit and boarding. In the trains, arrows show the next exit direction (a lot easier than usual audio announcement for a multilingual city).

 It is also visible that stations are designed to allow a transition to heavy metro-like high-floor (similar to what happened in Stuttgart in the past decades), but this is now unlikely for Brussels given their recent fleet of low-floor trams.

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