Research Article
Study on Evaluation Models of Highway Safety Based on Catastrophe Theory
Table 4
Classification and description of mesolevel safety levels of first-class highways.
| | Level | Value | Qualitative description |
| | Excellent | (0.981, 1) | A highway section with excellent safety performance which does not require safety improvement. | | Good | (0.938, 0.981) | A highway section with good safety performance which has some safety issues that need to be examined and improved. | | Fair | (0.884, 0.938) | A highway section with fair safety performance which has a considerable number of safety issues that need to be carefully examined. | | Poor | (0, 0.884) | A highway section with poor safety performance that needs to be thoroughly examined. |
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