Railway Operators: Union Pacific Railroad (24.7 %), North County Transit District;BNSF (18.6 %), Southern California Regional Rail Authority;Union Pacific Railroad (16.7 %), Southern California Regional Rail Authority;BNSF (15.2 %), BNSF (9 %), Southern California Regional Rail Authority (3.3 %), North San Diego County Transit District (3.3 %), North San Diego County Transit District;BNSF (2.5 %), Southern California Regional Rail Authority;BNSF;Union Pacific Railroad (2.3 %), North County Transit District (0.5 %), Southern California Regional Rail Authority;Union Pacific Railroad;LOSSAN Rail Corridor Agency (0.2 %), N/A (3.8 %)
Railway Users: N/A (100 %)
Electrification: not electrified (80.4 %), N/A (19.6 %)
Structures: 2.8 km in tunnels (0.7 %), 9.6 km on bridges (2.5 %), 1.1 km on embankments (0.3 %), 373 km on ground level (96.5 %)