Police Sirens: Early Warning Systems for Law Enforcement Vehicles
The familiar sounds of police sirens serve as a warning to drivers to pull over and allow law enforcement and emergency services vehicles to pass safely and swiftly through the area. Police sirens are designed to meet exacting specifications for sound quality, volume control, and tonal pattern; this ensures that they provide a uniform and easily recognizable audio clue to drivers and pedestrians in the vicinity. Police sirens, for instance, often sound quite different from factory sirens or the sirens found on ambulances and fire trucks; this difference is intended to ensure that drivers can readily distinguish between various siren types and respond to each appropriately. For example, the piercing tones associated with police sirens are generally reserved for emergency vehicle use; this prevents drivers from becoming confused by other types of sirens and helps them to avoid accidents and mishaps as a result.
In the early days of U.S. police departments, bells were used to serve the same purpose that police sirens fulfill today; these bells were attached to police and fire wagons and informed the local residents that an emergency situation existed. Today, people tend to avoid areas where police sirens are heard, but in those early days the bell often served to draw a crowd that helped to fight the fire or apprehend criminals, depending on what was required at the time. Modern police sirens are much louder and can often be heard over great distances, but even today they signal the presence of public officials who are working for the common good.
When selecting police sirens for purchase law enforcement agencies should consider a number of factors, including consistency, volume capacity, and overall quality. Maintaining consistency of tone and pattern from one cruiser to the next ensures that the public can quickly identify police sirens and yield to them in heavy traffic situations; additionally, it can provide a valuable means of identification for other police officers in the same department. By ensuring that all police sirens in the department emit a uniform tonal pattern, officers on the street can often learn to identify their own colleagues and provide help where needed. Volume capacity is another important element in making a selection; police sirens that are too loud can damage delicate ears, while sirens that are too soft may not be heard and heeded in tense situations. Finally, agencies should purchase the highest quality police sirens they can afford; this will save money over the long run in decreased repair and replacement costs and can ensure that these essential devices function correctly even after years of service.
