STANFORD BIKE TRAFFIC

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STANFORD BIKE TRAFFIC
Marisa Macias Janet Yu Xijia Chen
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Goals of the Project

• Make observations on daily Stanford traffic at
  specific times
• Express those observations using clear and
  creative visualizations
• Arrive at a conclusion about the safety of chosen
  locations on the Stanford campus throughout the
  day

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Assumptions Made

• Most traffic occurs during given times between
  classes
• 10 min. before the hour (morning) 5-15 min.
  after the hour (afternoon)
• Traffic consistent throughout week
• Monday is the same as Tuesday, etc.
• Skateboarders, Rollerbladers, and Cars ignored
• Assumed that they constituted small percentage of
  traffic

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Problems Encountered

• Limited time in which to accomplish project
• Human error
• Too many people
• Bicyclists doing U-turns
• Conditions not indicative of year-round traffic
• Weather sunny for all four days

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Choice of Method

• Criteria
• 3D --gt 3D visualizations
• Creative and clear
• Possible Candidates
• Scatter plots, line plots, density plots, bar
  graphs, pie charts
• Process of elimination

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The Chosen Methods

• Parallel Plot Bar Graphs
• Color clearly differentiates type of traffic
• Independent variables time vs. location
• Dependent variables number of bicyclists,
  pedestrians, and helmets
• Density Plot
• Clearly see totals at one time
• Color also used to identify types of traffic

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Conclusions

• Traffic generally decreases over time
• Higher percentage of helmets later in the day
• Tower and Gates had most traffic in one day
• Tower at 105 - 115 PM -- most bicyclists and
  pedestrians w/ small percentage of helmets
• Amount of helmets compared to bicyclists small