Low-Cost Portable Road Smoothness Testing Method Based on Pseudo-Vibration Velocity Range

Table 3

Fitting results for each section in 100 m unit.

Type	Road segments	R^2	a	b
Sedan	1–1	0.830	0.323	−0.020
	1–2	0.851	0.364	−0.139
	2–1	0.906	0.429	−0.472
	2–2	0.918	0.590	−1.602
	3–1	0.871	0.394	−0.210
	3–2	0.876	0.311	0.734
SUV	1–1	0.805	−0.077	0.330
	1–2	0.923	−0.100	0.346
	2–2	0.892	−1.000	0.524
	3–1	0.835	0.080	0.373