Research Article
Vibration Effect Produced by Raised Pavement Markers on the Exit Ramp of an Expressway
Table 6
Main effect test. The dependent variable: the combined total weighted acceleration RMS.
| | Source | Type III Sum of Squares | df | Mean Square | F | Sig. (P) |
| | Corrected model | 2.179 | 12 | 0.182 | 21.185 | 0.000 | | Intercept | 49.724 | 1 | 49.724 | 5801.422 | 0.000 | | Type of vehicle | 0.650 | 1 | 0.650 | 75.874 | 0.000 | | Speed | 0.275 | 5 | 0.055 | 6.406 | 0.000 | | Spacing | 1.284 | 6 | 0.214 | 24.965 | 0.000 | | Error | 0.523 | 61 | 0.009 | -- | -- | | Total | 71.209 | 74 | -- | -- | -- | | Corrected total | 2.702 | 73 | -- | -- | -- |
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a. R2=0.806 (Corrected R2=0.768).
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