| Abbreviation | Designation | |
|---|---|---|
| B | Begleitperson (Schwerbehindertenausweis) (German) assistant (disabled person's pass) | |
| b | bei (im Stationsnamen) (German) near (in station names) | |
| B | 2. Klasse (German) economy class / second class / 2nd class | classification |
| b | behindertengerecht (German) | classification |
| 88 / BE | België / Belgique, Koninkrijk België / Royaume de Belgique (Dutch) Belgium, Kingdom of Belgium | country code |
| AT-B | Burgenland, Land Burgenland (German) | country code |
| B | BERLIN, Stadt Berlin (German) | fare point / vehicle registration plate |
| B | Bärby (Swedish) | station code |
| B | Björnlunda (Swedish) | station code |
| B | RB Berlin, Regionalbereich Berlin (German) | railway administration |
| SE-B | Stockholm (län), Stockholms län (Swedish) | country code |
| B / Bro | ED Bromberg (1918–1920), Eisenbahndirektion Bromberg (German) ED Bydgoszcz | railway administration |
| B / Bln | K.E.D. Berlin (1880–1918), Königliche Eisenbahn-Direction Berlin (German) | railway administration |
| B / Bro | K.E.D. Bromberg (1880–1895), Königliche Eisenbahn-Direction Bromberg (German) | railway administration |
| B / Bro | K.E.D. Bromberg (1895–1918), Königliche Eisenbahn-Direction Bromberg (German) | railway administration |
| B | Kgl. Direction der Ostbahn (1849–1880), Königliche Direction der Ostbahn Bromberg (German) Royal division of the Eastern line, Royal division of the Eastern line Bromberg | railway administration |