Good morning on this stormy Friday.

A New Jersey Transit train derailed last night as it entered Pennsylvania Station. Expect delays of up to 15 minutes into and out of the station.

Repair work on several tracks at Penn Station begins on Monday, forcing changes in train schedules and threatening further delays for Long Island Rail Road, Amtrak and New Jersey Transit riders.

For commuters who use Penn Station, here’s the bottom line: Have a Plan B.

We asked our readers how they intended to handle the train disruptions. Here’s what they said:

“Monitor social media and the news in the morning. If there is a major disruption, I’ll try to work from home. My fear is the evening commute.”

— Justin Finnegan, 39, West Orange, N.J. (N.J. Transit)

“Avoidance is my plan. As much as humanly possible. Also, driving.”

— Susan Piskiel Blackburn, 63, Short Hills, N.J. (N.J. Transit)