The patented universal Quadrasonic Siren System is supported
by the Department of Science, Innovation and Technology and the
Royal Academy of Engineering under
the Regional Talent Engine scheme.
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QUADRASONIC  DIRECTIONAL SIRENS

State of the art life saving Quadrasonic Sirens enable motorists to
easily judge the speed and direction of Emergency Vehicles.
They can then take appropriate action without freezing or panicking.

​If you would like further information,
or to arrange an online or live demonstration please contact -

[email protected]

+44 (0)7964 269 350

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QUADRASONIC PROTOTYPE DEMONSTRATION

​The two higher pitched horns sound together followed by the
two lower pitched horns.

All four blue lights activate together, flashing in time with the sounds,
reinforcing the alerting and locating capabilities.

You can hear that the new siren sounds are not piercing like the current sirens.

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                                 BENEFITS of QUADRASONIC SIRENS

•   Quicker response times getting to emergencies

•   Gives independent directional information for subsequent Emergency Vehicles

•   Clearer radio and verbal communications inside emergency vehicles

•   Does not induce panic or freezing reactions in motorists

•   Cost savings from fewer repairs and compensation payments

•   Motorists react quicker and more appropriately

•   Fewer vehicle accidents involving emergency services

•   Reduced hearing damage to personnel

•   Reduced driver stress

•   More lives saved

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PROBLEMS WITH CURRENT EMERGENCY SIRENS

CURRENT SIRENS - HEALTH and SAFETY - HEARING DAMAGE

Research reveals that current sirens are probably a cause of hearing damage in firefighters.
The following is a Freedom of Information response from London Fire Brigade

(click or tap image to enlarge)

QUADRASONIC Directional Sirens are effective
in reducing the liklihood of hearing damage.

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PROBLEMS WITH CURRENT SIRENS - ACCIDENTS

Current electronic sirens often cause psycho-acoustic trauma in motorists.
This results in motorists panicking and taking inappropriate action.

This frequently causes accidents between emergency services vehicles and members of the public.
Unfortunately, many of these crashes result in serious injuries and fatalities.

Warning!  This video shows vehicles crashes which some people might find upsetting.

QUADRASONIC Directional Sirens are believed to be effective in
significantly reducing accidents.
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ACCIDENT STATISTICS - FATALITIES

Ref:  the National Safety Council - 10 year data study.
injuryfacts.nsc.org/motor-vehicle/road-users/emergency-vehicles

In the US there were an estimated 2,290 fatalities, 3,577 in the UK and EU,
and 55,922 world wide.
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ACCIDENT STATISTICS - SERIOUS INJURIES

Ref: IPCC - Independent Police Complaints Commission
policeconduct.gov.uk/sites/default/files/documents/RTI_study_police_road_traffic_incidents_IPCC_

In the US there were an estimated 21,014 serious injuries, 32,823 in the UK and EU,
and 513,163 world wide.
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Research has demonstrated that it appears that the current sirens, which are
based on 50 year old technology, play a significant part in these incidences.

The National Safety Council states that -
"The crash risk without lights and sirens is 7.0 per 100,000 transports,
and increases to 16.5 when lights and sirens are used throughout the transport"

Therefore, using the current lights and sirens increases the risk of fatalities by 235%

Using QUADRASONIC Sirens is likely to dramatically reduce fatalities and injuries
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QUADRASONIC SIRENS - ENHANCED 'DOPPLER EFFECT'

The sirens' pitch changes as the car approaches and passes by.
​This is the 'Doppler Effect'  and helps people judge speed, distance and direction.

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​QUADRASONIC SIRENS TESTING

Note the front grill mountings.
​The sirens are highly effective in a wide range of configurations
including roof mounting, door mounting and  grill mounted.
​(click or tap image to enlarge)

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QUADRASONIC  Sirens are Easily Located by Motorists
and will improve response times, saving more lives.
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APPLICATIONS - EMERGENCY SERVCES

Fire & Rescue - Ambulance - Police - Coastguard
​Mountain Rescue - Blood Service - Air Fields
Industrial complexes - Refineries


- REGIONAL SUITABILITY -

World Wide

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HOW DO QUADRASONIC SIRENS WORK ?

Emergency Vehicle operating Quadrasonic Sirens
correctly located by both motorists
(click or tap image to enlarge)

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Emergency Vehicle with YELP! and WAIL! sirens
​incorrectly located by both motorists.
(click or tap image to enlarge)

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PROFESSIONAL EVALUATION

​"One issue of concern to many fire officers and the general public would appear to be that with the yelp and wailer sirens it is extremely difficult to detect where the sound is coming from.

Mr Brandon demonstrated directional sound signals he has developed, and it would appear that the use of directional sirens could reduce accidents and potentially reduce fatalities and injuries.

The Fire Service could benefit from reduced driver stress and cost savings from a reduction in the number of vehicles being off the road due to accidents"  

Operational Equipment Team Manager - Fire & Rescue Service

"Having discussed your research and development into directional vehicle sirens and audible warning devices, I must reiterate my support for this work.

Having been in a position to see the result of incidents where emergency vehicles have had occurrences which resulted in injury and death on the road, any advance in technology that would assist and improve the pre alerting of road users must be a benefit. 

The airport fire and rescue service would benefit from this technology, as responding to emergencies in low visibility causes problems for those awaiting our response"

​Watch Commander - International Airport

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​If you would like further information,
or to arrange an online or live demonstration please contact -

[email protected]

+44 (0)7964 269 350

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FIREFIGHTERS DO A DEDICATED DANGEROUS AND DEMANDING JOB
THE HEALTH AND SAFETY OF THE PUBLIC AND PROFESSIONALS IS PARAMOUNT

​IN EMERGENCIES, EVERYONE DESERVES THE BEST EQUIPMENT AVAILABLE
CUTTING EDGE LIFE SAVING QUADRASONIC SIRENS ARE THE BEST SOLUTION