A Design Method for the Roadside Clear Zone Based on Accident Simulation Analysis

Table 6

Criteria for the occupant injury risk assessment.

Risk level	ASI threshold value	Occupant injury level
I	≤1	Noninjury
II	(1, 1.31]	Moderate injury
III	(1.31, 1.78]	Disabling injury
IV	>1.78	Fatal injury