Development of a Relationship between Pavement Condition Index and International Roughness Index in Rural Road Network

Table 2

Range of international roughness index and pavement condition index and associated parameters.

IRI range	Observed parameter	Number of sections	Unit	Mean	Min.	Max.	Std. D.
2.5–3.5	PCI	2598	—	97.51	86.49	99.48	3.21
	IRI	2598	m/km	2.97	2.53	3.47	0.26
3.5–5	PCI	545	—	68.31	44.25	89.48	16.04
	IRI	545	m/km	4.14	3.51	5.00	0.46
5–8	PCI	480	—	36.75	4.14	51.34	22.37
	IRI	480	m/km	5.82	5.00	8.01	1.16