Skip to content

Metrolina Regional Model

Home » Resources » Metrolina Regional Model
CRTPO Region
MRM Study Area

The primary inputs to the MRM include existing and planned transportation networks, estimated and projected socio-economic (SE) data, and travel survey data.  The partnering planning organizations are responsible for providing both network and SE data to the model custodian.  Networks and SE data for MRM22v2.0, the current official model effective October 3, 2023, include the calibration year, 2018, as well as future horizon years, 2025, 2035, 2045, and 2050.  The travel survey data has historically been collected on a ten-year cycle using outside contractors.

At a minimum, modeled transportation systems are required to include all existing and planned regionally significant transportation roadway and transit facilities as defined by the Code of Federal Regulations. The MRM includes freeways, expressways, arterials, and collectors as well as all scheduled transit routes.  Projects included in the future year networks are based on each Metropolitan Planning Organization’s (MPO’s) fiscally constrained Metropolitan Transportation Plan (MTP).  Future projects in non-MPO areas of the MRM are limited to projects funded in the current NC or SC Transportation Improvement Program (STIP). 

The MPOs and Rural Planning Organizations (RPOs) are responsible for developing both the existing and future year SE data for input to the MRM. This data includes households, population, number of employees, and students by traffic analysis zone (TAZ). The SE data is a crucial input for the model as it is the basis for the tours/trips produced and attracted within the model.  Details regarding the development of SE estimates and projections for CRTPO, GCLMPO, RFATS, and Catawba COG can be found in the Metrolina CommunityViz Model v 2.0 – Technical Document. For details regarding the development of SE estimates and projections for CRMPO, RRRPO, and Catawba County (part of the Greater Hickory MPO), please contact the respective agency.  

The 2018 estimated SE data coupled with travel patterns and trends collected through surveys are used to estimate travel in the calibration year. Projected SE data (2025, 2035, 2045, and 2050) is then the basis for future year travel.  The resulting travel demand captures choices related to the number and types of trips people make, the mode (walk, bike, transit, auto) they use to travel, the choice of destination, and the paths used to reach that destination.

To obtain a copy of the official Metrolina Regional Model, MRM22v2.0, contact the program manager, Martin Kinnamon at  For more detailed information regarding MRM22v2.0, please refer to the following documentation: Model documentation for MRM22v2.0, effective October 3, 2023.

Data and Documentation