San Francisco, California’s bike usage over time. Bike usage is measured by the number of trips taken. At first glance the trend shows higher usage during summer and warmer months.
Summer and Fall have the greatest bike-sharing usage and winter months show a steady decline in number of trips taken.
As temperature increases so does bike sharing usage. On average, bike sharing usage increased by 21.7 riders per degree (℉) increase in temperature. (Range: 47-75℉)
Between 62-75℉, we notice a much weaker correlation between bike sharing usage and temperature. This plateauing effect may be due to the decreasing marginal satisfaction gained per degree once a comfortable temperature has been reached. We also notice an interesting variance in ridership within this same temperature interval. Perhaps something else is at play.
|Total Trip Count:||318|
June 18th - There is higher bike sharing usage on weekdays. It would be interesting to look beyond this dataset to try and find out who is using bikes on weekdays.
June 21st - On weekends there is less bike sharing usage. Perhaps this is because less people are at work on weekends.
July 4th - As with weekends, bike sharing usage is low on holidays. This more strongly suggests that workers use bike sharing.
Now you can play with the visualization! Click on a day in the calendar, or hover over a station marker!
Verifying our hypothesis, we notice that average daily bike share usage is higher on weekdays when compared to weekends of the same week.
Rail, bus, and car are the three most common modes of non-bike transportation. Bike sharing programs can prevent an enormous amount of carbon dioxide from entering the atmosphere.
According to the journal Nature Climate Change, Carbon dioxide emissions have an associated social cost of $220 per ton [Moore, 2015].
|T or F? As the amount of precipitation increased, people used Bike Sharing less frequently in San Francisco.|
|T or F? Bike Sharing usage increased during warmer months.|
|T or F? As a general trend, Bike Sharing usage increased as temperature increased.|
|T or F? The rate that bike sharing usage increases with temperature is the same at both low to mild temperatures (47-62℉) and mild to warm temperatures (62-75℉).|
|T or F? Bike sharing is most popular on weekends and holidays.|
|T or F? Bike sharing helped San Franciscans save over 50,000 kilograms of CO2 from entering the atmosphere in 2014.|
This project was for University of Washington's Data Visualization course, CSE 442. It is created by:
We would like to examine more factors like other weather features and elevation changes between stations that could impact bike sharing usage. This in turn would provide more insight into factors that cause bike sharing usage to increase or decrease.