Like delays on the interstate due to yearly road construction and maintenance, railroads also experience delays due to maintenance, track upgrades, and tie replacements to keep the railroad in safe working order.
CSX and Norfolk Southern, the host railroads who own and maintain the tracks upon which we operate, frequently inspect the tracks to make sure that everything is safe and stabilized. When they find a problem, they fix the tracks and railbed.
After the work is complete, speed restrictions are placed along the repaired track until enough train tonnage passes over to make sure the ties, rail and/or rail-bed has settled properly.