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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
In addition, this item may be used by data structures in other ITS standards.
Remarks: This data element appears as the first optional element it the Pat II section of the BSM, and is
expected to be present when various potential dangerous events (such as hard breaking) have been declared
by the sender. Additional data elements in the message may provide more detail on the cause of this event.
7.55 Data Element: DE_ExteriorLights
Use: The status of various exterior lights encoded in a bit string which can be used to relate the current
vehicle settings.
The "Vehicle Exterior Lights" Probe Data Element provides the status of all exterior lights on the vehicle.
As currently defined, these are: parking lights, headlights (lo and hi beam, automatic light control), fog
lights, daytime running lights, turn signals (right / left) and hazard signals. Should the need for additional
types of light be needed, a new data element will be added.
ASN.1 Representation:
ExteriorLights ::= BIT STRING {
allLightsOff (0), -- B'0000-0000
lowBeamHeadlightsOn (1), -- B'0000-0001
highBeamHeadlightsOn (2), -- B'0000-0010
leftTurnSignalOn (4), -- B'0000-0100
rightTurnSignalOn (8), -- B'0000-1000
hazardSignalOn (12), -- B'0000-1100
automaticLightControlOn (16), -- B'0001-0000
daytimeRunningLightsOn (32), -- B'0010-0000
fogLightOn (64), -- B'0100-0000
parkingLightsOn (128) -- B'1000-0000
} -- to fit in 8 bits
XML Representation:
<xs:simpleType name="ExteriorLights-item" >
<xs:annotation>
<xs:appinfo>
allLightsOff (0) -- B'0000-0000
lowBeamHeadlightsOn (1) -- B'0000-0001
highBeamHeadlightsOn (2) -- B'0000-0010
leftTurnSignalOn (4) -- B'0000-0100
rightTurnSignalOn (8) -- B'0000-1000
hazardSignalOn (12) -- B'0000-1100
automaticLightControlOn (16) -- B'0001-0000
daytimeRunningLightsOn (32) -- B'0010-0000
fogLightOn (64) -- B'0100-0000
parkingLightsOn (128) -- B'1000-0000
</xs:appinfo>
<xs:documentation>
to fit in 8 bits
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:int">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="128"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="allLightsOff"/>
<xs:enumeration value="lowBeamHeadlightsOn"/>
<xs:enumeration value="highBeamHeadlightsOn"/>
<xs:enumeration value="leftTurnSignalOn"/>
<xs:enumeration value="rightTurnSignalOn"/>
<xs:enumeration value="hazardSignalOn"/>
<xs:enumeration value="automaticLightControlOn"/>
<xs:enumeration value="daytimeRunningLightsOn"/>
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