Bike lanes installed last year along Ninth Street in Park Slope are at the center of a debate among residents.

The bike lanes are a part of a safety initiative following a pedestrian-car crash that killed two children last March. Officials there have been four fatal accidents on the street in the past six years.

Some residents say changes need to be made.The new street design is more narrow and has parking on the outside of the bike lane.

The goal is to improve pedestrian and cyclist safety while cutting down the amount of traffic in the area.

A DOT spokesperson said in part, “The bike lane was installed less than a year ago and…it takes time for roadway users to get adjusted to the new street design. As part of the project, we also installed pedestrians islands to shorten the crossing distance on Ninth Street."

The spokesperson added that prior to the bike lanes being installed, the project received positive support from Community Board 6.