Railway Operators: Union Pacific Railroad (40.6 %), North County Transit District;BNSF (12.8 %), Southern California Regional Rail Authority;Union Pacific Railroad (11.5 %), Southern California Regional Rail Authority;BNSF (10.4 %), Union Pacific Railroad;Amtrak (6.9 %), BNSF (6.2 %), Southern California Regional Rail Authority (2.3 %), North San Diego County Transit District (2.3 %), North San Diego County Transit District;BNSF (1.8 %), Southern California Regional Rail Authority;BNSF;Union Pacific Railroad (1.6 %), North County Transit District (0.4 %), Southern California Regional Rail Authority;Union Pacific Railroad;LOSSAN Rail Corridor Agency (0.1 %), N/A (3.4 %)
Railway Users: N/A (100 %)
Electrification: not electrified (71.3 %), N/A (28.7 %)
Structures: 2.8 km in tunnels (0.5 %), 12.3 km on bridges (2.2 %), 1.1 km on embankments (0.2 %), 545.9 km on ground level (97.1 %)