Citi Bike is a bike-sharing program in New York City that allows residents and visitors to rent bicycles for short trips. Launched in 2013, it features thousands of bikes available at numerous docking stations throughout the city. Users can purchase single rides or memberships for more extended access. The program aims to promote eco-friendly transportation and reduce traffic congestion. Riders can easily locate bikes using a mobile app and return them to any docking station. Citi Bike has become a popular option for commuting, sightseeing, and recreational cycling in the urban environment.