There's no provision in the rules for cart path interference (RCGA/USGA). However, if the path is roped off, then the rule for immovable obstructions come into play.

"24-2b. The player must lift the ball and drop it without penalty within one clublength of and not nearer the hole than the nearest point of relief (which must not be in a hazard or on a putting green). When the ball is dropped within one clublength of the nearest point of relief, the ball must first strike a part of the course at a spot that avoids interference by the immovable obstruction and is not in a hazard and not on a putting green."

That said, most courses have a local rule that give you a free drop 1 clublength from the cart path.

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It's live! - www.ShipShapeClubs.com
PCS Class 'A' Clubfitter

A new highlight: Golfing the home course on Christmas Day.

I say it too often: If it's golf club shaped, you can play with it.

For the record, I'm a club doctor, not a swing doctor.