Some passengers on Maryland Area Regional Commuter trains may be partying to much.

That’s the word from the Maryland Transit Administration in a notice to passengers Thursday afternoon.

Drinking alcohol is allowed on the trains, but the MTA said there have been complaints “about alcohol consumption on trains and disruptive behavior that has included loud talking, profanity, and in some cases, physical altercations . . . associated with drinking.”

“Consumption of alcohol on MARC trains is a privilege, not a right,” the notice said.

Officials warned that MARC crews can restrict drinking and remove people from the trains for not following rules or for being disruptive.

The letter from MARC Director John Hovatter also reminded riders to remember that they may still have to drive home from commuter lots — and authorities will enforce laws against drunken driving.