Advances in Civil Engineering

Research Article

Development of Ideal Hump Geometric Characteristics for Different Vehicle Types “Case Study” Urban Roads in Kafr El-Sheikh City (Egypt)

Table 5

Results of the best achieved model for speed hump characteristics on hump-crossing speed.


Model		Variable	Constant	L	H	S	R²	ANOVA (F)

Microbuses	A1	Coefficient	−0.760	4.446	—	0.012	0.879	76.032 (0)
	A1	t ( value)	−0.624	10.462	—	2.038	0.879	76.032 (0)
	A2	Coefficient	5.027	4.857	−26.653	—	0.879	48.272 (0)
	A2	t ( value)	1.558	11.954	−0.804	—	0.879	48.272 (0)
	A3	Coefficient	0.973	4.491	−14.880	0.010	0.880	48.720 (0)
	A3	t ( value)	0.219	10.029	−0.407	1.446	0.880	48.720 (0)

Passenger cars	B1	Coefficient	−2.026	5.457	—	0.018	0.905	99.898 (0)
	B1	t ( value)	−1.513	11.691	—	2.878	0.905	99.898 (0)
	B2	Coefficient	10.085	5.978	−93.256	—	0.904	98.577 (0)
	B2	t ( value)	2.909	13.773	−2.816	—	0.904	98.577 (0)
	B3	Coefficient	4.85	5.638	−59.040	0.012	0.915	71.826 (0)
	B3	t ( value)	1.048	12.078	−1.548	1.633	0.915	71.826 (0)

Motorcycles	C1	Coefficient	−0.507	5.778	—	0.025	0.856	69.499 (0)
	C1	t ( value)	−0.287	9.391	—	3.001	0.856	69.499 (0)
	C2	Coefficient	15.74	6.511	−121.051	—	0.865	42.666 (0)
	C2	t ( value)	3.320	10.909	−2.486		0.865	42.666 (0)
	C3	Coefficient	8.445	6.013	−76.866	0.017	0.882	50.048 (0)
	C3	t ( value)	1.383	9.760	−1.527	1.746	0.882	50.048 (0)

Note. “t” means the t-test statistic; the best model; H is the height of speed hump in meter, L is the length of speed hump in meter, and S is the spacing between two consecutive speed humps.