There are a lot of commercial vehicles on the road. I think it would be nice to give the user the ability to input the height and weight of their commercial vehicle including oversized and overheight loads. Editors would include clearance heights when a road level 1 crosses over a Ground level, level 2 over level 1, etc. as well as roadway weight restrictions as displayed on signage (eg: Weight limit 8 tons empty weight) as well as general commercial truck restrictions as displayed on signage. The app can then take this information into account when large commercial vehicle operators request navigation. This can be achieved by adding only a few fields to the map editor for clearance height, truck restriction and weight restriction. Pilot escorts could use these functions to navigate for overheight vehicles.