Exploring the Effects of Signs’ Design and In-Vehicle Audio Warning on Driver Behavior at Flashing-Light-Controlled Grade Crossings: A Driving Simulator-Based Study

Table 3

ANOVA summary table of the effect of factors on approaching mean speed.

Source	d.f.	F-ratio
		Speed 300	Speed 220	Speed 100	Speed 50	Speed 20
Foggy condition	1	187.055	179.128	11.610	5.080	0.458
Gender	1	5.583	3.768	1.141	2.537	14.530
Vocation	1	0.485	1.340	0.090	0.020	0.094
Crossing type	2	1.578	35.005	85.097	138.235	136.307
FLTT	4	1.385	1.483	0.231	30.888	124.173
Crossing type × foggy condition	2	1.382	0.749	3.238	1.520	0.171
Crossing type × gender	2	0.540	0.569	0.058	0.681	0.237
Crossing type × vocation	2	0.576	1.036	0.043	0.180	1.698
FLTT ×  crossing type	8	0.304	0.739	0.578	1.754	14.872
FLTT ×  foggy condition	4	0.842	1.196	0.546	2.262	7.451
FLTT ×  gender	4	0.179	0.213	0.095	0.521	0.874
FLTT ×  vocation	4	0.043	0.207	0.332	0.573	0.196

Significant at the 0.05 level.