http://trn.trains.co...e%20speeds.aspx <-- subscription only, I believe, so the interesting bits:
I guess this is part of the track that NS placed under slow orders earlier in the summer.
- Work will begin Aug. 22 to raise speeds on 24 miles of Norfolk Southern right-of-way that hosts Amtrak's Wolverine Service trains. Track conditions have restricted speeds to 30 mph on that portion of the line.
- The track work will take place Monday through Thursday Aug. 22-25, Aug 29-Sept. 1, and Sept. 5-8 during the day. As a result, Amtrak will terminate morning eastbound Wolverine 350 at Jackson, Mich., on those dates, turning the equipment there for Chicago-bound train 353. Buses will substitute for trains between Jackson and Pontiac., Mich.
I guess this is part of the track that NS placed under slow orders earlier in the summer.