Most systems use two siren tones. Alert: A single tone signifying an emergency alert. … Attack: An up-and-down, rising and falling tone to signify there is a homeland security or attack emergency.
Related posts:
- What does 3 short sirens mean? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE Three siren tones are used in the country: Warning: a 2 minute long steady tone. Used to warn of the impending danger of a fire, environmental or other disaster, or high water level. Immediate danger: a 1-minute wailing...
- Why do I hear police sirens in my head? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE They are the result of an odd neurochemical mix-up in the brain, a condition known as tinnitus. More than 50 million Americans hear these phantom noises from time to time. For most, the sounds are sporadic, and soft...
- Why do I hear sirens outside? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE When the outdoor warning sirens sound it means that you are in danger outside. … If they sound again that means there is a new danger such as a second tornado warning. Sirens are never sounded for an...
- What does 4b mean on driving licence? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE expiry Date of licence issue (4a), expiry (4b), issuing authority (4) The date shown in 4a is the date the photocard was issued. 4b shows the date the driving licence expires. The authority that issued the licence is...
- What does a flashing yellow light mean? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE Any flashing yellow signal means drivers are to slow down and proceed through the intersection with caution. A flashing red signal means motorists should come to a complete stop before proceeding. CALL US NOW (Mon-Fri, 8am – 5pm...
- What does FR sanction mean? CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE QUOTE In general, the abbreviation “FR” means Financial Responsibility. Therefore, it appears that your Motor Vehicle license was suspended for… More. Helpful Unhelpful. 0 comments. Jun 2, 2011 CALL US NOW (Mon-Fri, 8am – 5pm PST) for a FREE...