Development of a Safety Evaluation Model for Provincial Highway

Table 13

Survey form for traffic facility.

Index	Subindex	Items contributing to the rating	Score range
Traffic facility (𝐹3)	Traffic sign (𝐹31)	The installation meets the standard, good visibility, and reasonable message	≤40
		Poor visibility and reasonable message and installation	≤60
		Worse visibility and some unseasonable message and installation	≤80
		Worst visibility and most unreasonable message and installation	≤100
	Traffic marking (𝐹32)	The installation meets the standard and good visibility	≤40
		Poor visibility and reasonable installation	≤60
		Worse visibility and some unseasonable installation	≤80
		Worst visibility and most unreasonable installation	≤100
	Guiding facility (𝐹33)	Spacing setting, number, and layout size satisfy standard	≤40
		Spacing setting, number, and layout size basically satisfy standard	≤60
		Most spacing setting and number don not satisfy the standard. Layout size is slightly smaller than the normative value.	≤80
		Spacing setting and number don not satisfy the standard. Layout size is less than the minimum.	≤100
	Safety facility (𝐹34)	Continuous safety barriers or 10 m safety zone	≤40
		Safety barriers for hard obstacles or steep slopes within 6 m	≤60
		Safety barriers for more than half of hard obstacles or steep slopes within 3 m	≤80
		Barriers not generally used	≤100