Park-and-Ride Lot Calculator

Calculate park-and-ride lot size, ADA spaces, and area requirements based on transit ridership.

Inputs

Daily Station Ridership

Drive-to-Station (%)

Avg Vehicle Occupancy

ADA Spaces (%)

Tab to move between fields

Results

Total Parking Spaces

1,000

Lot Area (sq ft)

325,000

ADA Accessible Spaces40

How to Use This Calculator

Enter Daily Station Ridership, Drive-to-Station (%), and Avg Vehicle Occupancy.
Set ADA Spaces (%).
Review Total Parking Spaces and Lot Area (sq ft).
Use ADA Accessible Spaces to inform your decision.
Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Avg Vehicle Occupancy

Avg Vehicle Occupancy	Total Parking Spaces	Lot Area (sq ft)
1.4	858	278,850
2.4	500	162,500
3.6	334	108,550
4.6	261	84,825

What each input means

Daily Station Ridership: Total daily boardings at the station
Drive-to-Station (%): Percentage of riders who drive and park at the station
Avg Vehicle Occupancy: Average passengers per vehicle (typically 1.1-1.3 for commuters)
ADA Spaces (%): Percentage of spaces designated as ADA accessible

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Daily Station Ridership = 2000, Drive-to-Station (%) = 60, Avg Vehicle Occupancy = 1.2, ADA Spaces (%) = 4 = 4 input(s) provided
Calculate Total Parking Spaces
Total Parking Spaces
1000 = 1000
Calculate Lot Area
Lot Area
325000 = 325000
Calculate ADA Accessible Spaces
ADA Accessible Spaces
40 = 40

Engine last updated August 5, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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