| warning siren | 2.04 | The busy signal is an warning siren. | ||
| wailing siren | 1.45 | The wailing sirens cleared the streets. | ||
| emergency siren | 0.59 | There were no emergency sirens. | ||
| blaring siren | 0.53 | Long motorcades with blaring sirens have become just a couple of cars. | ||
| faint siren | 0.26 | Silence fell over Tiananmen Square, and faint sirens could be heard in the distance. | ||
| first siren | 0.26 | In pop culture, they were the first sirens of sisterhood. |