U.S. Army Researchers Lead New NATO Standard for Vehicle Mobility Courtesy Photo | One of the most important outputs from the Next Generation NATO Reference Mobility.. read moreread more Courtesy Photo | One of the most important outputs from the Next Generation NATO Reference Mobility Model (NG-NRMM) is a data-rich, graphical, map-based representation of terrain types and how well, or poorly, a vehicle can traverse that terrain. In the left image, green-colored terrain represents terrain on which the sample vehicle can move quickly, while darker, redder-colored terrain is slower to traverse. On the right, the NG-NRMM computes a “best path” for vehicles traversing terrain. The NG-NRMM is a high-fidelity, computational model to show how well a given vehicle can move over terrain, providing commanders and leaders quality, real-time information to inform on-the-ground operations.