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Table 1 Results from the conspicuity measurements of the panels in Fig. 3, 4 and 5

From: Which sign is more visible? Measuring the visibility of traffic signs through the conspicuity index method

 

Panel in Fig. 4

Panel in Fig. 5

Forest background in Fig. 3

Wall background in Fig. 3

N

57

59

59

54

Mean (mm)

100

37

>135

77

SD (mm)

20

17

25

95% Conf. level (mm)

5

4

7

Conspicuity angle (deg.)

17.3

6.5

>42

13.6

95% Conf. Level (deg.)

0.9

0.8

1.2