For further assistance in taxiway design and analysis, the object library contains Transoft Design FAA Taxiway Design Group (TDG). These virtual objects represent the critical TDG dimensions as defined in FAA Advisory Circular 150-5300-13B (March 2022).

FAA Advisory Circular 150-5300-13B (March 2022)
Figure 1-1 Taxiway Design Groups (TDGs)