Orange Line
- Airport Express Line (Delhi Metro)
- Ampang Line
- Barcelona Metro line 9
- Broad Street Line
- Brussels Metro line 2
- C Line (RTD)
- Circle Line (Singapore)
- Denver metropolitan area
- Eglinton Crosstown line
- G Line (Los Angeles Metro)
- IND Sixth Avenue Line
- Kaluzhsko-Rizhskaya line
- Line 1 (Busan)
- Line 1 (Rio de Janeiro)
- Line 2 (Incheon)
- Line 3 (Riyadh Metro)
- Line 3 (Seoul)
- Line 4 (Chennai Metro)
- Line 6 (São Paulo Metro)
- Line 7 (Madrid Metro)
- London Overground
- MAX Orange Line (TriMet)
- Metro Orange Line (Minnesota)
- Metrorail (Miami-Dade County)
- Orange B Line
- Orange Belt (Pittsburgh)
- Orange D Line
- Orange F Line
- Orange Line (BART)
- Orange Line (Bangkok)
- Orange Line (CTA)
- Orange Line (CapMetro)
- Orange Line (DART)
- Orange Line (Jaipur Metro)
- Orange Line (Kanpur Metro)
- Orange Line (Kolkata Metro)
- Orange Line (Lahore Metro)
- Orange Line (MBTA)
- Orange Line (Mexico City Metro)
- Orange Line (Montreal Metro)
- Orange Line (Mumbai Metro)
- Orange Line (Nagpur Metro)
- Orange Line (Namma Metro)
- Orange Line (San Diego Trolley)
- Orange Line (Sound Transit)
- Orange Line (VTA)
- Orange Line (Washington Metro)
- Orange Line, KMRT
- Orange M Line
- PNR Metro South Commuter Line
- Paris Métro Line 5
- Tung Chung line
- U Line
- U9 (Berlin U-Bahn)
- Viva Orange
- Zhonghe-Xinlu Line