RF Safe

Road User Exposure from ITS-5.9 GHz Vehicular Connectivity

2022 · No effect · Low evidence

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No effectLow evidencePaper 700

Using computational dosimetry for a 3D car model with two V2V antennas (each fed with 1 W) at 5.9 GHz and an adult human model nearby, the highest SAR was in the skin of the head (34.7 mW/kg) and eyes (15 mW/kg). SAR in torso (including genitals) and limbs wa…

Study snapshot

Publicationmanual · 2022
Study typeexposure_assessment
Reported directionNo effect
Evidence ratingLow

Abstract

Road User Exposure from ITS-5.9 GHz Vehicular Connectivity Benini M, Parazzini M, Bonato M, Gallucci S, Chiaramello E, Fiocchi S, Tognola G. Road User Exposure from ITS- 5.9 GHz Vehicular Connectivity. Sensors (Basel). 2022 Sep 15;22(18):6986. doi: 10.3390/s22186986. 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. Open access paper: mdpi.com

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment
Effect directionno_effect
PopulationAdult human model (computational) representing a road user near a car
Sample sizeNot supplied
ExposureRF · 5900 MHz · 0.0347 W/kg
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Using computational dosimetry for a 3D car model with two V2V antennas (each fed with 1 W) at 5.9 GHz and an adult human model nearby, the highest SAR was in the skin of the head (34.7 mW/kg) and eyes (15 mW/kg). SAR in torso (including genitals) and limbs was negligible or much lower; whole-body SAR was 0.19 mW/kg. SAR values were reported as well below ICNIRP limits for 100 kHz–6 GHz.

Outcomes measured

  • Specific absorption rate (SAR) in tissues (skin of head, eyes, torso/genitals, limbs)
  • Whole-body SAR
  • Comparison to ICNIRP exposure limits (100 kHz–6 GHz)

Limitations

  • Computational dosimetry/modeling study (no direct measurements in humans)
  • Scenario limited to a specific 3D car model with two antennas fed with 1 W at 5.9 GHz
  • Only an adult human model was used in the described scenario
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "vehicle-to-vehicle (V2V) vehicular connectivity antennas",
    "frequency_mhz": 5900,
    "sar_wkg": 0.0347,
    "duration": null
  },
  "population": "Adult human model (computational) representing a road user near a car",
  "sample_size": null,
  "outcomes": [
    "Specific absorption rate (SAR) in tissues (skin of head, eyes, torso/genitals, limbs)",
    "Whole-body SAR",
    "Comparison to ICNIRP exposure limits (100 kHz–6 GHz)"
  ],
  "main_findings": "Using computational dosimetry for a 3D car model with two V2V antennas (each fed with 1 W) at 5.9 GHz and an adult human model nearby, the highest SAR was in the skin of the head (34.7 mW/kg) and eyes (15 mW/kg). SAR in torso (including genitals) and limbs was negligible or much lower; whole-body SAR was 0.19 mW/kg. SAR values were reported as well below ICNIRP limits for 100 kHz–6 GHz.",
  "effect_direction": "no_effect",
  "limitations": [
    "Computational dosimetry/modeling study (no direct measurements in humans)",
    "Scenario limited to a specific 3D car model with two antennas fed with 1 W at 5.9 GHz",
    "Only an adult human model was used in the described scenario"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "RF-EMF",
    "vehicular connectivity",
    "V2V",
    "ITS 5.9 GHz",
    "computational dosimetry",
    "SAR",
    "road user exposure",
    "ICNIRP"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.28,
      "reason": "Assesses RF-EMF exposure scenario for road users near connected vehicles; could be relevant to workers/roadside personnel though not explicitly stated."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/s22186986
PubMed: Not supplied

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