Table 4 Risk magnitude classification description.

From: Scenario analysis of HAZMAT transportation road traffic crashs on China’s highways based on AcciNet-RFs

Risk level

Score

Rating

Grading description

Major risk (rad)

32–64

4

Unacceptable risk: must be investigated immediately, and the hidden danger can be resolved before continuing

Larger risk (orange)

16–32

3

Risks that are acceptable but need to be corrected: formulate contingency plans and strengthen the frequency of supervision and inspection

Normal risk (blue)

8–16

2

Tolerable Risk: Developing a Check Ledger

Low risk (green)

1–8

1

Acceptable risk: conduct routine checks or random spot checks