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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
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In addition, this item may be used by data structures in other ITS standards.
7.23 Data Element: DE_LightbarInUse
Use: A data element which is set if any sort of additional visible lighting-alerting system is currently in use. This
includes light bars and the various symbols they can indicate as well as arrow boards, flashing lights, (including
back up alerts) and any other form of lighting not found on normal vehicles of this type or related to safety
systems.
Used to reflect any type or style of visual alerting when a vehicle is progressing and transmitting DSRC messages
to others nearby vehicles about its path.
Suggest a better encoding would have some provision for type of light beyond the on/off flashing mindset and
include the "move left-right" flashes which are increasingly set up when the response vehicle is used as the "first
cone" of the event when on scene. Also transportation response vehicles often have small arrow or sign boards on
them.
ASN.1 Representation:
LightbarInUse ::= ENUMERATED {
notEquipped (0),
notInUse (1),
inUse (2),
reserved (3) -- for future use
}
-- schoolBusLights
XML Representation:
<xs:simpleType name="LightbarInUse" >
<xs:annotation>
<xs:appinfo>
notEquipped (0)
notInUse (1)
inUse (2)
reserved (3) -- for future use
</xs:appinfo>
<xs:documentation>
schoolBusLights
posible direction arrow board uses here too?
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:unsignedInt">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="3"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="notEquipped"/>
<xs:enumeration value="notInUse"/>
<xs:enumeration value="inUse"/>
<xs:enumeration value="reserved"/>