Research Article
Research on Recognition and Evaluation of Traffic Guide Sign
Table 4
Cronbach’s alpha for each scale.
| Scale | Cronbach’s alpha | Reliability |
| Rule layer | 0.790 | Good | Setting form and position | 0.648 | Acceptable | Layout and font | 0.704 | Good | Color, reflection, and illumination | 0.713 | Good | Overall layer | 0.806 | Good |
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