PARK SLOPE - Park Slope residents are trying to determine how a stroller painted completely white appeared at Union Street and Sixth Avenue.

Residents say the stroller, which has since been clipped from the corner where it was chained, resembles a ghost bike, which are painted white to honor cyclists killed on city streets.

"We live in a neighborhood that is highly populated with strollers," says Rachel Rosenblum, who lives in Park Slope. "Maybe it's to tell traffic to slow down."