Smart Mobility Communication and Human Exposure to RF Fields: a Numerical Dosimetry Approach

In-vehicle human exposure to RF fields generated by vehicle-to-vehicle (V2V) communication technology is assessed with numerical dosimetry. The exposure scenario was realistic and included a realistic 3D model of the car, multiple V2V antennas placed at the sides of the car and operated at the standard V2V communication frequency (5.9. GHz) and a phantom of an adult male placed at the driver position. The results evidenced that the Specific Absorption Rate (SAR) was not negligible only in the body parts closer to the antennas, i.e., the limbs and negligible in the head and torso of the phantom. Whole body SAR and 10g averaged local body SAR obtained both in singleantenna and multiple-antenna exposures were well below the ICNIRP limits of exposure for the general public in the 100 kHz-6 GHz band. The greatest SAR was obtained when all the antennas were operated simultaneously and was equal to 1% and 7% of the limits for whole body and local body exposures, respectively.