Said product has its own thread on here somewhere.. Google will find it..
Here it is boys
EMERGALERT is an emergency vehicle warning device that enhances existing siren technology to create a Clearer Road Ahead utilising the latest patent pending technology.
This was designed for emergency services striving to reduce their response time.
EMERGALERT is the most advanced solution to the problem that Emergency services have been experiencing for years. It will save time when seconds and are the difference between life and death!
EMERGALERT improves road safety and creates a clearer road ahead for emergency vehicles when every second counts!
It is the only technology to deliver a warning to all radio stations within selected bands at one time.
Its range of 300 metres to the front and sides of the emergency vehicle alerts general road users of the emergency vehicles presence earlier saving time and lives.
Increased soundproofing of today's vehicles makes it hard to hear a siren at all, let alone from 50 metres away. Vehicle manufacturers promote soundproofing of cars to gain sales.
Studies show that the effectiveness of sirens is severely limited to a maximum penetration of 8 to 12 metres at intersections. This is due to road noise, directional sirens, soundproofing and physical barriers.
Australian crash data and ABS statistics show emergency vehicles in Australia are involved in accidents at a rate of over 1 per day, as well as killing someone every 6 months.
The Australian Transport Safety Bureau stated that crashes involving emergency vehicles are frequent enough to warrant examination and that, on the face of it, the availability of a better alerting system could yield important safety gains.
The ATSB working on behalf of the Federal Government acknowledges the innovative design of the EMERGALERT system and its potential contribution to road safety.
More here
http://www.abc.net.au/tv/newinventors/txt/s1230893.htm