Siren police units are the highly noticeable audible advanced warning
Without the audible warning of siren police use, officers could be in far more danger on our roads. We often hear sirens long before we see the flashing lights and the audible warning is as important as the visible warning.
The siren police use is not something you would ever have given much thought, if any too. We hear sirens and largely ignore them unless they are very close by or in our street! What we see can be effected by lighting conditions, weather conditions and the proximity of other traffic and even bright sunlight. However, one thing that is sure to get attention is the siren police employ to get us to move over and let them pass. The sounds in city streets seem to reverberate and sirens in such situations and areas are highly effective.
As an advance warning or notice to siren police will use are very effective. Sirens can be used with public address systems and with lights to very good effect. If a police officer wants to get your attention but you don’t see the flashing lights then the siren would be pressed into action, you really can’t ignore the short sharp yelp of a siren if it is directly behind or in front of you. Sirens and public announcement systems can be used in conjunction where there are potential public disorder situations with large crowds. A light couldn’t disperse people in the same way the siren and direct instructions can.
You could be forgiven for thinking that siren police use are only one sound with very little to recommend it as advance warning. However, there are different sounds that can be produced by sirens, and different situations call for different siren use. A police vehicle responding to a priority will likely have a constant siren sound to warn traffic of their approach. If an officer wants to attract the attention of a specific driver then a yelp sound would be more effective. A rapid siren sound that produces the woo-woo effect we are familiar with garners peoples full attention and it is a sound we immediately associate with emergencies.
How about a siren police unit that vibrates and produces a low tone rather than the sound we are familiar with? It may sound a strange concept but such sirens are now entering the market and in testing, they have proved very effective. The vibrations produced by these newer sirens travel along the road surface and enter a targeted vehicle, which feels like it is rocking. Now that is a very good way to get someone’s attention where all else has failed. Those involved in the testing and been on the receiving end of these vibration sirens say it’s difficult to ignore the shakes it produces in your vehicle.
Therefore, from the low and inaudible vibration siren to the loud wailing siren police use normally there is plenty of choice. Sirens that can be as we expect and produce a noise could be coupled with the vibrating sirens that are coming onto the market to give maximum effectiveness. The police siren units need to be able to warn road users and pedestrians and when used with the lighting on the vehicle you get a very visible and audible warning. Sight and sound is always a powerful combination and that is why police vehicles need both to get our full attention.
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