Table 1 Descriptive statistics of guessability scores for ten symbolic traffic signs
From: Eye movements and brain oscillations to symbolic safety signs with different comprehensibility
Sign no. | Intended meaning | Guessability score (mean ± SD) (%) | Bonferroni grouping resulta |
|---|---|---|---|
4 | Do not turn left | 100 ± 0.0 | A (easy-to-comprehend group—good signs) |
10 | Turn right | 100 ± 0.0 | |
1 | Do not turn right | 99.4 ± 3.9 | |
9 | Do not go straight | 98.2 ± 8.5 | |
7 | U turn is prohibited | 97.6 ± 15.4 | |
5 | Tourist area | 11.3 ± 25.4 | B (hard-to-comprehend group—bad signs) |
2 | No vehicle carrying explosives | 6.8 ± 39.2 | |
3 | Headphone users may be lost in music | 6.3 ± 15.5 | |
8 | Risk of grounding | 2.9 ± 9.9 | |
6 | Caution: texter | 2.4 ± 15.6 |