Springfield is a virtual proving ground used in the NADS-1, NADS-2, and miniSim simulators. The image above is an example of a custom tile developed for Florida State University and added to the Springfield network. 

The following options were added to the Springfield asset library in FY2020:

Multiple parked vehicles in a row 

Yield to pedestrian crosswalk sign, placed in the center of a street 

Portable message/DOT construction-style sign, with several options for text