NEW YORK - Travelers headed to Penn Station should prepare for another day of delays and cancellations stemming from Monday's slow speed train derailment.

The derailment of a New Jersey Transit train knocked out service to eight of Penn's 21 tracks.

Amtrak owns the tracks, and its crews are working to repair the damage.

But rail officials have not given a timetable for service to return to normal.

The MTA has cancelled 10 Long Island Rail Road trains during this morning's rush.

Three more are terminating at Jamaica Station, and one is being diverted to Hunterspoint Avenue in Queens.

Metro-North's Port Jervis and Pascack Valley lines are operated by NJ Transit - passengers are being advised to stay on their trains to Hoboken where they can take the PATH into Manhattan.

Other New Jersey Transit trains are running on a holiday schedule, but extra trains are being added.

NJ Transit buses, private carriers, PATH, and NY Waterway ferries are still cross-honoring tickets.

Amtrak is still running on a modified schedule between New York and Washington.

Riders can expect delays of up to 50 minutes during rush hours, and up to 25 minutes at other times.