a user must wait 10 minutes before taking another one. Although there were over 90,000 registered users in September 2007 only one third of them used the system on a regular basis. As of November 2007 the system had been used more than 2,750,000 times, representing 8,000,000 km of travel. Planned future expansion The bike-sharing system was received by residents with great enthusiasm, covering approximately 70% of the city area, including Ciutat Vella, the Eixample and some parts of Sant Martí and Gràcia. However, stations have not been placed in areas where the grade is greater than four percent, such as the hilly areas of Montjuïc and Tibidabo. Several neighboring cities have asked for the service to be extended to their cities as well, and studies are underway on how to implement this for the wider metropolitan area. In 2019 the network started a large 7,000 bike expansion with pedal assisted bikes from Canadian firm PBSC. Name The name is derived from bici, the Catalan and Spanish short-form for bicycle, and BCN, Barcelona's airport code and a popular abbreviation of its name. The English suffix -ing was also added, like the Spanish words footing (a pseudo-anglicism used for jogging), parking (car park), camping (campsite) and Vueling, which is a Catalan airline. See also Outline of cycling Utility cycling - Short-term hire schemes Urban planning of Barcelona Sources External links Interview with users and city council planner Transport in Barcelona Community bicycle programs Sustainable transport Bicycle sharing in Spain Fare collection systems in Spain