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Better Emergency Sirens | |||||||||||||||||
How many of you have been driving down the road and it seems as if an ambulance, police car, or fire truck has snuck up on you, in which you panic and quickly get out of the way. Sometimes you just don't see them coming. So I have this idea: Much like the way that you can broadcast your MP3 player through a tiny antenna, the emergency vehicles would be equipped with directional short range antennas. The siren would override the radio for a few seconds so that the driver can hear a warning before the emergency vehicle gets too close. This would be roughly 2-300 feet or so.
MurrayL, Nov 18 2008
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Like a sparking device the siren would have to cover all frequencies ad might be audible over cell phones as intermittent blasts of static.
They could use an auxiliary receiver that does nothing but receive such emergency broadcasts. Of course, they would have to come up with a standard and build it in, and somehow retrofit old radios with one.
This has become a problem: with every generation of new vehicles, the interiors have better acoustic insulation from the outside and progressive louder radios. The problem? Nobody hears emergency vehicle sirens anymore.
Instead of continuing the arms race, we need regulation on acoustic insulation levels for motor vehicles, and enforcement of laws concerning car stereo noise. Here in Florida, there's a fine if it's audible from 100 feet away. Theoretically--it's not enforced at all.