Preliminary estimates of electromagnetic field exposures due to advanced vehicle technologies

Current trends in the automotive industry are leading to the deployment of an increasingly wide range of advanced vehicle systems, many of which are based on wireless communications technologies. As the impact of human exposure to multiple sources is considered to be additive in nature, the tolerable exposure levels for individual sources are not absolute, but depend on the presence of other systems that may contribute to the local electromagnetic environment. Preliminary estimates of possible contributions from a number of typical automotive systems to the in-vehicle electromagnetic environment, based on a power balance approach, suggest that exposure of vehicle occupants may need to be more carefully considered in future.