Metro

Marty boosts Slope bike foes

The hated Prospect Park West bike lane was only a “trial” project that was supposed to be yanked if it caused safety problems, Brooklyn Borough President Marty Markowitz claims in court papers made public yesterday.

Park Slope residents fuming over the lane filed a lawsuit in March, and Markowitz said in a supporting affidavit that Transportation Commissioner Janette Sadik-Khan told him the lane was installed temporarily — contradicting DOT arguments in Brooklyn Supreme Court that it was always meant to be permanent.

The DOT is trying to have the suit tossed, claiming it was filed late.

Suits against permanent facilities have to be filed by a set deadline, which had passed by March. If the court rules the lane was temporary, the suit can proceed, a source said.