Taken from Nextra NXI400 Prisoner Transport promotional material:

The NXI400’s armored frame offers a variety of protection and durability, featuring: multi-sided armoring of passenger compartment (using certified Deltac-4 ballistic steel plating), blast-protected flooring, armor reinforced wheel wells, double armoring of all large-surface principal impact areas, IMVD-certified structural integrity on par with most battlefield-ready armored vehicles.

Danger Zone One. Story by Midnight. Art by Salaiix.