Quantitative Risk Analysis on the Transport of Dangerous Goods Through a Bi-Directional Road Tunnel

This article reports the results of a quantitative risk analysis (QRA) of dangerous goods vehicles (DGVs) running through road tunnels. The authors investigated factors including peak hourly traffic volumes (VHP), percentage of heavy goods vehicles (HGVs), and failure of the emergency ventilation system. The risk associated with an alternative route running completely in the open air and passing through a highly populated urban area was also evaluated. Findings show an increased risk level with an increase the VHP, the percentage of HGVs, and a failure of the emergency ventilation system. However, the risk curves of the tunnel investigated were found to lie both above and below those of the alternative route running in the open air depending on the type of dangerous goods being transported. For example, risk was found to be greater in the tunnel for two fire scenarios (no explosion). In contrast, the risk level for the exposed population was found to be greater for the alternative route in three possible accident scenarios associated with explosions and toxic releases. The authors conclude with a discussion of how this QRA might be helpful for decisionmakers establishing additional safety measures or setting regulations for dangerous goods vehicles in their transportation corridors.


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  • Accession Number: 01641237
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 19 2017 3:43PM