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Highways and Climate Change

TitleHighways and Climate Change
Publication TypeManual Entry
Citation Key388
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Community Notes

Direct quotes from the article regarding qualitative guidance for decision-making:

"adaptation efforts may be limited to a qualitative assessment of vulnerability"

"rank the associated impacts through a quantitative or qualitative process, using rankings such as high, medium, or low, enabling decision makers to prioritize the future impacts"

"Table 4 describes a qualitative approach of assessing risk of hazardous events and describes how risk associated with an event is categorized"

"While these considerations provide a general methodology for assessing adaptation options, individual organizations may vary in the specific application of this process. For example, the United Kingdom Climate Impacts Programme (Willows and Connell, 2003) identifies a three-tiered approach for analyzing actions:

  • Tier 1 - a systematic qualitative analysis, where the size, significance and relative importance of the risks, costs and benefits for each option are described. There should be an emphasis on ranking the options in terms of costs and benefits, but this may not involve quantification.
  • Tier 2 - a semi-quantitative analysis, where some aspects of the risks, costs and benefits are assessed in quantitative terms while others are assessed qualitatively; the assessment would aim to assess uncertainty by placing upper and lower bounds on the risks, costs and benefits.
  • Tier 3 - a fully quantitative analysis, where the probable performance of each option in managing the risk is quantified in terms of costs and benefits and, in some cases or where possible, converted into monetary terms."