This megaregion model contains population, transit, and auto ground truth data from various sources. For more information on Replica’s data sourcing and methodology, please visit our Help Center.
Population Data
Replica’s population data is based on US Census demographic datasets which are used to create a “synthetic population” that is statistically representative of the actual population in a region. Below are the Census resources referenced in this megaregion model:
Source | Year |
American Community Survey (ACS)/ Public Use Microdata Sample (PUMS) | 2019 |
Census Transportation Planning Products (CTPP) | 2016 |
Longitudinal Employer-Household Dynamics (LEHD) | 2017 |
Transit Data
Below is a list of all the transit service providers and the routes modeled in this megaregion model.
Agency | Total Routes Modeled | Ground Truth Data Source | Data Year |
BFT | 19 | Agency Provided - BFT | 2021 |
C-TRAN | 27 | Agency Provided - C-TRAN | 2021 |
Cherriots | 27 | Board of Directors Meetings | 2021 |
City of Seattle | 2 | King County Metro Rider Dashboard | 2021 |
Community Transit | 47 | Agency Provided - Community Transit | 2021 |
Everett Transit | 9 | Agency Provided - Everett Transit | 2021 |
Intercity Transit | 19 | Agency Provided - Intercity Transit | 2021 |
Lane Transit District | 28 | Agency Provided - Lane Transit District | 2021 |
Metro Transit | 157 | Agency Provided - Metro Transit (via public record request), Agency Provided - Metro Transit (via customer), King County Metro Transit Ridership Dashboard | 2021 |
Mountain Line | 12 | Missoula Urban Transportation District (Mountain Line) 2018 Strategic Plan | 2016 |
Pierce County Ferries | 2 | Pierce County Ferry Metrics | 2021 |
Pierce Transit | 31 | Agency Provided - Pierce Transit | 2021 |
Portland Aerial Tram | 1 | National Transit Database | 2021 |
Portland Streetcar | 3 | Ridership Performance webpage, Portland Streetcar Ridership by Day Type | 2018-2019, 2021 |
Seattle Monorail | 1 | 2016 Combined Daily Monorail Ridership Dataset | 2016 |
Sound Transit | 28 | Performance Tracker, Service Delivery Report | 2021 |
Spokane Transit Authority | 47 | Annual Route and Passenger Facilities Performance Report | 2019 |
TriMet | 91 | Route Ridership Reports | 2021 |
Valley Regional Transit | 25 | Transportation Development Plan 2023-2027 | 2020-2021 |
Washington State Ferries | 38 | Washington State Ferries Traffic Statistics Rider Segment report | 2021 |
Whatcom Transportation Authority | 28 | Agency Provided - Whatcom Transportation Authority | 2021 |
Auto Data
Replica sources seasonal auto counts from in-vehicle GPS data that is scaled to roughly match AADT counts. The roadway network is based on the OpenStreetMap network version published September 1, 2021. For more information on OpenStreetMap, click here.