An apparatus for irradiation of a fluid with UV light includes a tubular body consisting of UV-permeable material. For the links included in each of the paths, respective levels of use of the requested resources due to communications in process over the network are determined. The package includes the assembly and a carrier, such as a carrier substrate or leads. Light emitted by at least one of the illumination units is guided from within the at least one vehicle structure to illuminate a vehicle interior.