Research Article
Characteristics of Laser Backscattering Intensity to Detect Frozen and Wet Surfaces on Roads
Table 3
Statistics of laser backscattering intensity for surface types at the 5 m distance.
| Surface Type | Vegetation | Dry Asphalt | Wet Asphalt | Ice (Sidewall) |
| No. of sample points | 471 | 535 | 323 | 148 | Mean | 244.43 | 206.56 | 131.49 | 132.33 | Standard deviation | 21.67 | 7.96 | 20.24 | 66.74 | Minimum | 200 | 189 | 82 | 78 | Maximum | 372 | 233 | 178 | 835 |
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