Travel Mode Split Calculator
Estimate transportation mode share based on population density, transit access, parking costs, and bike infrastructure.
Inputs
$
Results
Auto Mode Share (%)
55.5%
Transit Share (%)14.8%
Bicycle Share (%)14.8%
Walk Share (%)14.9%
How to Use This Calculator
- Enter Population Density (per sq mi), Transit Access (%), and Daily Parking Cost ($).
- Set Bike Infrastructure (miles).
- Review the Auto Mode Share (%) result.
- Use Transit Share (%) and Bicycle Share (%) to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
How the result changes with Population Density (per sq mi)
| Population Density (per sq mi) | Auto Mode Share (%) |
|---|---|
| 10,000 | 45.5% |
| 35,000 | 31.5% |
| 65,000 | 31.5% |
| 90,000 | 31.5% |
What each input means
- Population Density (per sq mi)
- People per square mile in the study area
- Transit Access (%)
- Percentage of residents within 1/4 mile of transit
- Daily Parking Cost ($)
- Average daily parking cost in the area
- Bike Infrastructure (miles)
- Total miles of bike lanes and paths in the area
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersPopulation Density (per sq mi) = 5000, Transit Access (%) = 50, Daily Parking Cost ($) = 10, Bike Infrastructure (miles) = 50 = 4 input(s) provided
- Calculate Auto Mode ShareAuto Mode Share55.5 = 55.5
- Calculate Transit ShareTransit Share14.8 = 14.8
- Calculate Bicycle ShareBicycle Share14.8 = 14.8
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