A traffic light on the camp road? Yes, you are seeing correctly. But don't worry. It's gone by now. Just a temporary thing...while the bridge near the Claryville turn-off, the bridge that re-crosses the west branch of the Neversink River was being replaced.
Several years ago we heard the bad news from the county or the state (I think the state): the old bridge could not legally/safely handle the weight of the buses that go over there all year, carrying school groups and summer campers. Until it was replaced those buses would have to come to Frost Valley the other way - Kingston to Big Indian on route 28, and up the steep east side of the road over Slide Mountain. Fifteen miles on a back road rather than a much easier 7 miles coming from Claryville. Finally the new bridge at Claryville was built. But in the final weeks before the opening of the bridge, there was a makeshirt one-lane unpaved workaround road put in and thus a stop-light at each end of the little detour. So there you have it: traffic lights in Claryville! Take note, ye historians.