Cycling in New York City in the century, bicycling resurged. A narrow, physically separated bike lane on Sixth Avenue in Midtown Manhattan was unsuccessful and consequently eliminated; however, bike lanes on major bridges were created, refurbished, or improved, and the New York City Department of Parks and Recreation, in partnership with other agencies, created the Manhattan Waterfront Greenway and other bikeways. The Department of Parks and Recreation also added a vendor program to provide "hop on, hop off" bicycle rental services across various city parks. The linked network of bicycle rentals is facilitated through concessions in Central Park, Riverside Park South, West Harlem Piers Park
Central Park Nicholas Park, Jackie Robinson Park, and Marcus Garvey Park. The park has its own New York City Police Department precinct—the Central Park Precinct—which employs both regular police and auxiliary officers. In 2005, safety measures held the number of crimes in the park to fewer than one hundred per year (down from approximately 1,000 annually in the early 1980s). The New York City Parks Enforcement Patrol also patrols Central Park. There is an all-volunteer ambulance service, the Central Park Medical Unit, that provides free emergency medical service to patrons of Central Park and the surrounding streets. It operates a rapid-response bicycle