Due to track maintenance by Union Pacific Rail Road, Amtrak has made adjustments to their train schedule which conflicts with the time ACE 04 is en route from Great America to Fremont. ACE 04 passengers can expect delays from 2 to 15 minutes at Great America and Fremont until the track maintenance is complete. Track maintenance is expected to be complete by February 14th. Please call 1-800-411-RAIL if you have any questions or leave your question in the comment section below.