Table 3
Standards of overall subjective scores for a survey panel.
| | Scores | Rating standards |
| | 90~100 | The level of safety facility maintenance of this segment is very high and the road users are completely satisfied with the safety facilities. The facilities just need routine maintenance. |
| | 80~89 | The level of safety facility maintenance of this segment is high and the road users are satisfied with the safety facilities. The facilities need routine maintenances or minor repairs. |
| | 70~79 | The level of safety facility maintenance of this segment is average and the road users are not very satisfied with the safety facilities. The facilities need minor repairs or middle-scale repairs. |
| | <70 | The level of safety facility maintenance of this segment is lower and the road users are not satisfied with the safety facilities. The facilities need middle-scale repairs or special repairs. |
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