Effects of highway work zone temporary countermeasures

Shahin, Fadi; Elias, Wafa; Toledo, Tomer

doi:10.1186/s12544-023-00593-2

European Transport Research Review

An Open Access Journal

Table 4 LMEM Estimation results for average speed (m/sec) model

From: Effects of highway work zone temporary countermeasures

	Full model				Parsimonious model
Fixed effects	Est. Value	Std. Error	p-value	95% CI	Est. Value	Std. Error	p-value	95% CI
Intercept	3.230	0.034	< 0.001	[3.163, 3.297]	3.195	0.025	< 0.001	[3.146, 3.244]
Experiment 2	-0.047	0.032	0.148	[-0.110, 0.016]	-	-	-	-
AWA	-0.047	0.006	< 0.001	[-0.059, -0.035]	-0.050	0.006	< 0.001	[-0.062, -0.038]
HWZ	-0.123	0.008	< 0.001	[-0.139, -0.107]	-0.125	0.007	< 0.001	[-0.139, -0.111]
Lane width 3.00	-0.011	0.007	0.125	[-0.025, 0.003]	-0.011	0.007	0.128	[-0.025, 0.003]
Lane width 2.70	-0.018	0.009	0.050	[-0.036, 0.000]	-0.018	0.009	0.041	[-0.036, 0.000]
Entry strips - AWA	-0.014	0.009	0.132	[-0.032, 0.004]	-	-	-	-
Entry strips - HWZ	-0.008	0.009	0.358	[-0.026, 0.010]	-	-	-	-
HWZ rumble strips	-0.058	0.012	< 0.001	[-0.082, -0.034]	-0.056	0.012	< 0.001	[-0.080, -0.032]
DSD in AWA	0.003	0.008	0.739	[-0.013, 0.019]	-	-	-	-
DSD in HWZ	0.001	0.008	0.902	[-0.015, 0.017]	-	-	-	-
VMS in AWA	-0.038	0.008	< 0.001	[-0.054, -0.022]	-0.036	0.007	< 0.001	[-0.050, -0.022]
VMS in HWZ	-0.001	0.008	0.865	[-0.017, 0.015]	-	-	-	-
Male	0.050	0.028	0.079	[-0.005, 0.105]	0.048	0.028	0.089	[-0.007, 0.103]
Age 25–29	-0.072	0.032	0.024	[-0.135, -0.009]	-0.067	0.032	0.038	[-0.130, -0.004]
Age over 30	-0.208	0.042	< 0.001	[-0.290, -0.126]	-0.174	0.036	< 0.001	[-0.245, -0.103]
Run 2	0.036	0.009	< 0.001	[0.018, 0.054]	0.036	0.009	< 0.001	[0.018, 0.054]
Run 3	0.053	0.011	< 0.001	[0.031, 0.075]	0.053	0.011	< 0.001	[0.031, 0.075]
Run 4	0.062	0.012	< 0.001	[0.038, 0.086]	0.062	0.012	< 0.001	[0.038, 0.086]
Random effects
Residual	0.008	0.0003			0.008	0.0003
\({\sigma }_{1}^{2}\) (Intercept)	0.018	0.003			0.018	0.003
\({\sigma }_{2}^{2}\) (Run2)	0.007	0.001			0.007	0.001
\({\sigma }_{3}^{2}\) (Run3)	0.009	0.002			0.009	0.002
\({\sigma }_{4}^{2}\) (Run4)	0.012	0.002			0.012	0.002
\({\sigma }_{5}^{2}\) (HWZ strips)	0.003	0.001			0.003	0.001
\({\rho }_{12}\)	0.124	0.125			0.108	0.124
\({\rho }_{13}\)	0.122	0.120			0.104	0.119
\({\rho }_{23}\)	0.769	0.064			0.774	0.063
\({\rho }_{14}\)	0.133	0.117			0.132	0.117
\({\rho }_{24}\)	0.725	0.070			0.728	0.069
\({\rho }_{34}\)	0.816	0.051			0.818	0.051
\({\rho }_{15}\)	-0.007	0.207			-0.059	0.202
\({\rho }_{25}\)	0.032	0.269			0.041	0.268
\({\rho }_{35}\)	-0.188	0.239			-0.169	0.238
\({\rho }_{45}\)	-0.301	0.219			-0.285	0.219

Back to article page