Transportation
- R2 (SEPTA)
- Wilmington/Newark Line (R2 Wilmington/Newark line)
- Warminster Line (R2 Warminster line)
- Autopista Radial R-2, a Spanish radial motorway connecting Madrid to Guadalajara and passing through Alcobendas and connecting to N-320
- R2 expressway (Slovakia)
- Orenburg Airlines by IATA code
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