Cal. Code Regs. Tit. 13, § 1029 - Installation Requirements
Sirens and speakers installed on authorized emergency vehicles shall be mounted as follows:
(a) Electromechanical and Mechanical Sirens.
Class A electromechanical and mechanical sirens shall be mounted outside,
between the grille and radiator, or under the hood. Class B electromechanical
and mechanical sirens shall be mounted outside or between the grille and the
radiator. Mechanical motorcycle sirens that do not operate when the vehicle is
stationary shall not be installed on motorcycles manufactured after January 1,
1981.
(b) Electronic Sirens. Class
A and B electronic sirens installed after January 1, 1976, shall be mounted
outside or with the horn opening facing forward ahead of the radiator with a
relatively open path for the sound to project forward. The horn axis shall be
parallel to the road and vehicle centerline.
(c) Dual Speakers. Dual speakers for
electronic sirens shall be connected in phase and mounted so that the speaker
axis is parallel to the vehicle centerline or angled outward not more than 10
degrees to the sides.
(d) Speakers
in Lightbars. Electronic siren speakers may be mounted facing forward behind a
speaker grille in a lightbar.
(e)
Transfer. A siren, except a motorcycle mechanical siren, meeting the
requirements established by the department at the time it was first installed
on an authorized emergency vehicle may be transferred between authorized
emergency vehicles by the owner or sold by the owner for use on other
authorized emergency vehicles.
Notes
Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 24012 and 26103, Vehicle Code.
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