Megaregion Last Updated: 10/05/2022
*This date is subject to change with every model rerun, this article references the 10/05/22 run.
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 |
128 Business Council | 9 | None | N/A |
Amtrak | 1 | Amtrak Downeaster Statistics Dashboard | 2021 |
Brockton Area Transit Authority | 13 | Potential Impacts of Ride-Hailing on the Brockton Area Transit Authority Report | 2018 |
Casco Bay Lines | 3 | National Transit Database | 2021 |
Greater Portland Metro Bus | 11 | GP Metro Performance Statistics | 2021 |
Green Mountain Transit | 31 | National Transit Database | 2021 |
MBTA | 197 | MBTA Open Data Portal | 2019 |
PVTA | 50 | PVTA Comprehensive Regional Transit Plan Update | 2018-2019 |
Rhode Island Public Transit Authority | 57 | National Transit Database | 2021 |
Southeastern Regional Transit Authority | 25 | SRTA Comprehensive Regional Transit Plan Update | 2018-2019 |
Special Services Transportation Agency | 2 | None | N/A |
Steamship Authority | 3 | Steamship Authority 2021 Annual Report | 2021 |
University of New Hampshire | 8 | National Transit Database | 2019 |
WRTA | 28 | FY19 WRTA Fixed Route Ridership - By Route and Month | 2018-2019 |
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.