06 Siren Limitations Flashcards
1
Q
Effective range of siren:
A
80 feet at a 90 degree intersection
2
Q
Ambient noise in a vehicle:
A
- speed
- volume of radio
- fan setting
- Motor
- Windows - up or down
- Any other noise in the car
3
Q
A siren must rise to a level ___ dB higher than the ambient noise.
A
10
4
Q
Ambient noise of car at idle and going 55mph:
A
Idle: 32-66 dB
55mph: 53-76 dB
5
Q
Attenuation
A
The process of keeping noise out.
6
Q
On average, sirens produce a max of ____ dB ___ ft in front of siren speaker.
A
124 dB, 10 ft
7
Q
Sirens drop to what dB level 80 ft away?
A
106 dB
8
Q
Effective range of siren:
A
80ft
9
Q
Studies on localization of emergency vehicle concluded that:
A
It is not practical for a civilian driver to identify the location of an approaching siren.
