Table 2.

Estimated fixed effects parameters of the regression model (LMM) used to analyze the intra-individual standard deviations of the estimated TTCs for the accelerating vehicles in relation to the mean estimated TTC (M_estTTC), acceleration signal condition, and velocity at occlusion (v_occ). Displayed are effect estimates (β), standard errors (SE), corrected degrees of freedom (df), t-, and p-values.

	β	SE	df	t	p
(Intercept)	0.06	0.04	62.09	1.55	0.127
MestTTC	0.19	0.01	406.94	26.03	<0.001
Acceleration signal condition	−0.02	0.05	384.31	0.45	0.654
vocc	0.02	0.05	383.81	0.50	0.618
MestTTC × acceleration signal condition	0.04	0.01	385.85	2.64	0.009
MestTTC × vocc	0.01	0.01	383.74	0.59	0.557
Acceleration signal condition × vocc	0.2	0.1	383.23	2.13	0.034
MestTTC × acceleration signal condition × vocc	−0.09	0.03	383.45	3.48	0.001

Note: Bold font indicates statistical significance (p < 0.05).