Anti-subway-surfing barriers have been installed on a string of No. 7 cars to try to stop kids from attempting the deadly maneuver — but some straphangers aren’t convinced they’ll thwart the young scofflaws.

The padded barriers have been placed toward the top between train cars and are designed to prevent would-be surfers from climbing on the roof a car — but critics say the contraptions could actually give the rogue teens a boost to their destination, or at least do little to stop them.

“It looks like when you go to Chuck E. Cheese’s and you have … things that you can climb up on,” Queens resident Jordani Badettu, 28, scoffed.

Bea Milligan, 53, of Manhattan said the barriers were “not enough.

“Put up metal spikes on top of the [roof], like they do for the birds,” Milligan said.

Trish

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