2016 Chicago Cabs Analysis

The dataset used in this project is from the official website of Chicago data portal. I selected all the Chicago taxi trips in 2016 to see what information can we get from the data, for example, how centralized is Chicago, and where are the places for taxi drivers to have higher possibility to pick up next ride. What should be mentioned in here is this dataset does not include the taxi trips from ride-sharing companies such as Lyft, Uber, etc

Number of taxi rides in the City of Chicago drops through the year of 2016

The data is huge, there are roughly around 20 million taxi trips in Chicago in 2016. I made a graph showed the number of taxi trips per second through the whole year of 2016. It seems the number of taxi trips provided by the conventional cab companies dropped through the second half year of 2016. The cause of the market share dropping could be related to the market expansion of those taxi ride-sharing companies, which made the conventional cab companies in the city of Chicago harder and harder to make the profit.

Chicago, is centralized

Well, with no doubt that most of the cities in the world are centralized to some extent. For the city of Chicago, the taxi trip analysis provided us this information from another perspective. What we have in here is a bunch of contour maps of taxi trips in all the community areas in each day of the week, they also have the information of whether the rides were at daytime or at night, and whether they were pickup or dropoff rides in that certain community area.

In here I only put the contour results of Monday pickups at daytime and night. The readers are kindly referred to the shiny app of this project to see more about the result analysis. In fact, there aren’t too much different between the pickups and dropoffs distribution in the city of Chicago on different days. There are always much more taxi pickups and dropoffs in those community areas in the city center and the two airports (ORD, MDW). The number of taxi trips at night from both the airports is higher than at daytime, this is due to the limited choices of public transportation from the airports to the city at night.

There are always higher pickups than dropoffs in the airports

It would be always interesting for taxi drivers to know where could potentially pick up next rides. Well, in here I provided a group of graphs showing the ratio between the pickups and dropoffs in different days, time, and community areas. In the daytime, the ratio is roughly evenly distributed through the city except for those less taxi activity areas. However, there are much more pickups than dropoffs in the airports comparing with other areas in the city. Well, it would be a good option for taxi drivers to seek next ride in the airports if the dropoff area of their last ride is not far away from the airport, especially at night.

It’s cheaper to pay per minute for your taxi ride if the destination is far away from the center

This is a very interesting phenomenon in this analysis. In our contour map, we can see the mean fare you pay per minute for your trip is higher if your destination is away from the city center. In fact, the fare per minute in here is calculated from the fare divided by the trip time. The cause of this is mainly due to the trip fare is more related to the trip range. The longer trip denotes higher fare. However, the drivers can always drive faster without encountering the traffic issues in the downtown area. So the trip times are not as long as what we expected. In this case, the mean fare per minute of trips to the community areas away from the downtown areas always seems higher. For example, as shown in this graph, the fare per minute of trips going to the far south of the city of Chicago is 50% higher than the trips to the downtown areas.

Trip ranges in the city center are shorter than trip ranges out of downtown

It’s always interesting to analyze the trip ranges of the taxi rides. I did an analysis on trip range distribution through different community areas. It seems that more of the trips in the city center or downtown areas are short trips. The trips going to and from these areas are shorter, compared to those trips in further areas. For example, the trip ranges of taxi rides to and from the airports or far south of Chicago are nearly 5 times longer than the range of rides in downtown areas.

Summary

  • Taxi ride dropped in the second half year of 2016;
  • From the taxi rides analysis, Chicago is a very centralized city;
  • Taxi drivers are advised to seek next ride in the airports if the last drop off is not far away from the airports;
  • Numbers indicate you pay more per minute if you are going out of the town;
  • Most of the trips in the city center are much shorter than those in further areas.

Forgot to mention, the day in which there were most taxi rides was the first day when the Chicago River was dyed green. The day in which there were least taxi rides was the Christmas day when every people in Chicago was staying at home with family.

 

Shiny app link: https://jmanmingj.shinyapps.io/shinyproj/

Yiming Wu
Yiming Wu
Yiming is a data science fellow in NYC data science academy. He is always passionate about machine learning, data visualization, and coding reusable scripts. He received his Ph.D. degree in Electrical Engineering from the Université de Technologie Belfort-Montbéliard, Belfort, France. The thesis was mainly focused on the identification of the degradation mechanisms in the fuel cells, and the data-driven performance degradation prediction using vector machines (SVM and RVM). He is an eager problem solver who can extract useful information and insights from different complex datasets in a variety of fields. He used to be professional in clarinet and piano before master. When he's not doing data, he always loves writing some jazz for fun.

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