Megaregion Last Updated: 10/07/2022
*This date is subject to change with every model rerun, this article references the 10/07/22 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 |
Arlington Transit | 21 | Monthly Service Performance Reports | 2021 |
Asheville Rides Transit | 18 | Transit Committee Agenda - Ridership Report | 2021 |
Bethesda Circulator | 1 | Bethesda Transportation Solutions Report | 2017-2019 |
Blacksburg Transit | 40 | Monthly Ridership and Service Level Reports | 2021 |
CATS | 66 | Charlotte Area Transit System Ridership Report | 2021 |
Chapel Hill Transit | 23 | Partner Packet - February Performance Report | 2021-2022 |
Charlottesville Area Transit | 12 | FY 2022 Revised Ridership Counts | 2021-2022 |
Charm City Circulator | 4 | National Transit Database | 2021 |
DASH | 13 | National Transit Database | 2021 |
DC Circulator | 6 | DC Transit Development Plan 2020 Update | 2019 |
DC Streetcar | 1 | Ridership Report Graph | 2016-2019 |
FAST | 19 | National Transit Database | 2021 |
Fairfax CUE | 4 | National Transit Database | 2021 |
Fairfax Connector | 100 | National Transit Database | 2021 |
GRTC | 38 | GRTC Trend Analysis | 2019 |
GoDurham | 17 | Durham Transit Plan Feb 2021 | 2019 |
GoRaleigh | 39 | GoRaleigh Performance Reports | 2021 |
GoTriangle | 17 | Durham Transit Plan Feb 2021 | 2019 |
Greensboro Transit | 22 | National Transit Database | 2021 |
Hampton Roads Transit (HRT) | 66 | HRT Transit Development Plan 2016, HRT Ridership Dashboard | 2015-2016, 2021 |
Harrisonburg HDPT | 43 | Harrisonburg Department Of Public Transportation Transit Development Plan | 2015-2016 |
Loudoun County Transit | 28 | National Transit Database | 2021 |
Maryland Transit Administration | 106 | National Transit Database | 2021 |
Maryland Transit Administration Metro Subway | 1 | National Transit Database | 2021 |
Montgomery County MD Ride On | 81 | National Transit Database | 2021 |
Mountain Line Transit Authority | 24 | Mountain Line 2019 NTD Profile | 2019 |
NC State University Wolfline | 10 | Agency Provided - NC State University Wolfline | 2021-2022 |
OMNIRIDE | 28 | Transit Strategic Plan | 2017-2018 |
Orange County Public Transportation | 3 | OCPT 2019 NTD Profile | 2019 |
Regional Transportation Agency of Central Maryland | 14 | RTA Fixed Route Ridership Dashboard | 2014-2018 |
Shuttle-UM | 19 | Shuttle UM 2019 Annual Report | 2018-2019 |
TheBus | 24 | Prince George, MD County Transit Vision Plan | 2017 |
Virginia Railway Express | 2 | 2021 CEO Report | 2020-2021 |
WMATA | 196 | Rail Ridership Data Viewer, WMATA Bus Ridership Data Viewer | 2021 |
Wave Transit | 14 | National Transit Database | 2021 |
Williamsburg Area Transit Authority | 10 | WATA 2016 Transit Development Plan | 2014-2015 |
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.