The NYC Citi Bike App is a Leaflet based interactive map which allows you to explore the number of bikes borrowed and docked from each Citi Bike station. The interactive map visualizes the most popular stations and journeys for any time of day and day of the week.
Bike stations on the map are colored to show which of the docking stations have the most bikes borrowed from them during the selected times and days. Stations colored red have more bikes borrowed from them than are docked at them. This means that they lose bikes during the selected time. The green stations are stations where more bikes are docked than borrowed. These stations therefore end up with more bikes than they start with for the selected time period.
The orange lines show the most popular routes. If you follow the orange lines from any bike station you can see the most poplar journeys between that station and other New York bike stations. The data behind the map only shows where and when a bike was borrowed and docked. Therefore these orange lines don't show the actual routes between two bike stations.
The map includes the option to filter the data by time of day. Notice how the orange and green stations change during the morning and evening rush hours. In the morning the red stations (the ones losing bikes) tend to be on the outskirts of the Citi Bike network. In the evening commuting hours the red stations (the bike stations where more bikes are being borrowed than returned) are concentrated in the city center. This pattern obviously reflects the movement of people into the city in the morning for work and then traveling out of the city after work.
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