HICKSVILLE - Long Island Rail Road riders are bracing for the worst after negotiations broke down Monday between the MTA and the LIRR unions.

The MTA is warning riders to prepare for a strike, which would take effect at midnight Sunday, but could begin impacting service sooner as the railroad secures equipment.

The looming strike would snarl the commute for about 300,000 daily riders. The MTA on Friday released contingency plans that include designated carpool parking areas, shuttle buses and a free ferry from Glen Cove to midtown.

Worried riders fretted to News 12 Long Island on Monday, with some anticipating a chaotic situation that would impact many workers and students.

Some LIRR riders said they would work from home or try to take a bus if the strike goes on as planned.