| |||
| attention signal; approach signal | |||
| warning signal; alarm signal | |||
| warning sign | |||
|
signal avertisseur : 25 phrases in 9 subjects |
| Automated equipment | 1 |
| Communications | 12 |
| Electronics | 1 |
| Life sciences | 1 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Nuclear physics | 1 |
| Radiation | 1 |
| Transport | 6 |