Streetsblog has a plan with pictures. Check it out.

Streetsblog has a sketch of DOT’s plan for 9th Street in Park Slope, Brooklyn. We think it’s a great plan deserving of support. The new configuration narrows a notoriously dangerous four lane road down to two travel lanes and adds a median with left-turn bays and a pair of bike lanes with three-foot buffers.

The plan is a response to community activism that started after a sedan careened through the front door of Dizzy’s Diner on Eighth Avenue and
9th Street in the summer of 2004.  Miraculously, no one was hurt. But the event galvanized
neighborhood residents to begin a process that generated more than 1,200
signatures urging the City’s Department of Transportation to address
long-standing pedestrian-safety and reckless-driving problems on 9th Street.

This proposed "road diet" is modeled on a successful plan that DOT implemented on Vanderbilt Avenue in Prospect Heights in 2005.