Assertion: fire engine's siren | /r/CapableOf | fit their apparatus
Facets:
value: with these types of warning systems
type: OTHER
Source sentences:
text: The "acoustic" or "air" traditional sirens are still in wide use, most notably on North American-type fire apparatus but other countries such as Japan have fitted their apparatus with these types of warning systems as well, as its overtones help the public "locate" and avoid the fire truck—the newer electronic signals disperse almost pure electronic sine wave tones, which are hard to locate, especially in city "canyons" of buildings.