Assessment of the Variability of Human Exposure to Radiofrequency Electromagnetic Fields Arising from 5.9 GHz Vehicular Communication in Urban Environments

2023 · No effect · Low evidence

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No effectLow evidencePaper 418

Study snapshot

Publicationmanual · 2023

Study typeexposure_assessment

Reported directionNo effect

Evidence ratingLow

Abstract

Assessment of the Variability of Human Exposure to Radiofrequency Electromagnetic Fields Arising from 5.9 GHz Vehicular Communication in Urban Environments Tognola G, Benini M, Bonato M, Gallucci S, Parazzini M. Assessment of the Variability of Human Exposure to Radiofrequency Electromagnetic Fields Arising from 5.9 GHz Vehicular Communication in Urban Environments. Sensors. 2023; 23(15):6802. doi.org. Abstract This paper assessed the variability of radiofrequency exposure among road users in urban settings due to vehicle-to-vehicle (V2V) communication operating at 5.9 GHz. The study evaluated the absorbed dose of radiofrequencies using whole-body specific absorption rate (SAR) in human models spanning different age groups, from children to adults. To overcome limitations of previous studies, we developed a novel hybrid procedure that combines deterministic and stochastic approaches, enabling assessment across multiple urban layouts. Real urban conditions and varying propagation scenarios were considered in SAR calculations. By varying the road user’s position within 1.5–300 m from transmitting cars, the SAR distribution was determined. Median SAR remained consistently low, around 0.70 mW/kg, even with multiple transmitting cars and multiple emitting antennas, using maximum power allowed in US (44.8 dBm). The 99th percentile of SAR distribution varied based on body mass, decreasing for heavier models (typically adults) and increasing with the number of transmitting cars and antennas. The highest absorbed dose (73 mW/kg) occurred in a child model. The SAR consistently remained below the 80 mW/kg limit for whole-body exposure to electromagnetic fields in the 100 kHz–300 GHz range. Open access paper: mdpi.com

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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

PopulationHuman models spanning different age groups (children to adults) representing road users in urban settings

Sample sizeNot supplied

ExposureRF · 5900 MHz

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Using a hybrid deterministic–stochastic procedure across multiple urban layouts and propagation scenarios, median whole-body SAR was consistently low (~0.70 mW/kg) even with multiple transmitting cars/antennas at maximum allowed US power (44.8 dBm). The highest absorbed dose reported was 73 mW/kg in a child model, and SAR values remained below the stated 80 mW/kg whole-body limit (100 kHz–300 GHz).

Outcomes measured

Whole-body specific absorption rate (SAR)
Absorbed dose variability/distribution (median, 99th percentile, maximum) under different urban layouts, propagation scenarios, distances, and numbers of transmitting cars/antennas

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "vehicular communication (V2V)",
    "frequency_mhz": 5900,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Human models spanning different age groups (children to adults) representing road users in urban settings",
  "sample_size": null,
  "outcomes": [
    "Whole-body specific absorption rate (SAR)",
    "Absorbed dose variability/distribution (median, 99th percentile, maximum) under different urban layouts, propagation scenarios, distances, and numbers of transmitting cars/antennas"
  ],
  "main_findings": "Using a hybrid deterministic–stochastic procedure across multiple urban layouts and propagation scenarios, median whole-body SAR was consistently low (~0.70 mW/kg) even with multiple transmitting cars/antennas at maximum allowed US power (44.8 dBm). The highest absorbed dose reported was 73 mW/kg in a child model, and SAR values remained below the stated 80 mW/kg whole-body limit (100 kHz–300 GHz).",
  "effect_direction": "no_effect",
  "limitations": [],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency exposure",
    "vehicular communication",
    "V2V",
    "5.9 GHz",
    "urban environments",
    "whole-body SAR",
    "children",
    "adults",
    "propagation scenarios",
    "hybrid deterministic stochastic procedure"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Assesses exposure among road users in urban environments; could include professional drivers, 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/s23156802
PubMed: Not supplied

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