Browse Standards J1849_200804
Historical REVISED 2008-04-21

Emergency Vehicle Sirens J1849_200804

This SAE Recommended Practice provides laboratory test procedures, requirements and guidelines for electronic siren systems with a single loudspeaker, and electromechanical sirens for use on authorized emergency vehicles, which call for the right-of-way. This document is applicable only to such sirens that have all dimensions across the sound-emitting opening equal to or less than 0.5 m. Test procedures and performance requirements for individual system components are not included in this version.

Data obtained from measurements of siren performance depend not only on the characteristics of the siren tested, but additionally on the test procedures and the characteristics of the measurement instrumentation and test environment. These additional factors must be well defined and controlled to obtain reliable data. Detailed test methods are described here, which include specifications for a laboratory environment, to minimize the measurement uncertainty and obtain accurate and reproducible measurement results. Such results are necessary to qualify the performance of all sirens as equally as practicable. Requirements have been established based on the laboratory-measured performance of sirens that have been effective in emergency service.

J1849_202002
2020-02-10
Latest
Revised
J1849_201210
2012-10-15
Historical
Stabilized
J1849_200804
2008-04-21
Historical
Revised
J1849_200207
2002-07-11
Historical
Revised
J1849_199508
1995-08-01
Historical
Revised
J1849_198907
1989-07-01
Historical
Issued

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