Road User Exposure from ITS-5.9 GHz Vehicular Connectivity

Source: www.mdpi.com/1424-8220/22/18/6986

MDPI / Volume 22 Issue 18 10.3390/s22186986
by Martina Benini 1,2, Marta Parazzini 2, Marta Bonato 2, Silvia Gallucci 1,2, Emma Chiaramello 2, Serena Fiocchi 2 and Gabriella Tognola 2
1. Department of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, 20133 Milan, Italy
2. Institute of Electronics, Computer and Telecommunication Engineering (IEIIT), Consiglio Nazionale delle Ricerche (CNR), 20133 Milano, Italy

Sensors 2022, 22(18), 6986; doi.org/10.3390/s22186986
Received: 27 July 2022 / Revised: 8 September 2022 / Accepted: 13 September 2022 / Published: 15 September 2022

(This article belongs to the Special Issue Vehicle-to-Everything (V2X) Communications II)

Abstract

This study addressed an important but not yet thoroughly investigated topic regarding human exposure to radio-frequency electromagnetic fields (RF-EMF) generated by vehicular connectivity. In particular, the study assessed, by means of computational dosimetry, the RF-EMF exposure in road users near a car equipped with vehicle-to-vehicle (V2V) communication antennas. The exposure scenario consisted of a 3D numerical model of a car with two V2V antennas, each fed with 1 W, operating at 5.9 GHz and an adult human model to simulate the road user near the car. The RF-EMF dose absorbed by the human model was calculated as the specific absorption rate (SAR), that is, the RF-EMF power absorbed per unit of mass. The highest SAR was observed in the skin of the head (34.7 mW/kg) and in the eyes (15 mW/kg); the SAR at the torso (including the genitals) and limbs was negligible or much lower than in the head and eyes. The SAR over the whole body was 0.19 mW/kg. The SAR was always well below the limits of human exposure in the 100 kHz–6 GHz band established by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The proposed approach can be generalized to assess RF-EMF exposure in different conditions by varying the montage/number of V2V antennas and considering human models of different ages.

Keywords: V2X; vehicular connectivity; RF exposure; RF dose assessment; road user



Lees verder in de categorie Onderzoeken | Terug naar homepage | Lees de introductie