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SAE J2735-Draft-Rev28 [issued: 11-10-08] 
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131 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
            <xs:restriction base="xs:unsignedInt">
               <xs:minInclusive value="0"/>
               <xs:maxInclusive value="127"/>
            </xs:restriction>
         </xs:simpleType>
         <xs:simpleType>
            <xs:restriction base="xs:string">
               <xs:enumeration value="useInstantlyOnly"/>
               <xs:enumeration value="useFor3meters"/>
               <xs:enumeration value="useFor10meters"/>
               <xs:enumeration value="useFor50meters"/>
               <xs:enumeration value="useFor100meters"/>
               <xs:enumeration value="useFor500meters"/>
               <xs:enumeration value="useFor1000meters"/>
               <xs:enumeration value="useFor5000meters"/>
               <xs:enumeration value="useFor10000meters"/>
               <xs:enumeration value="useFor50000meters"/>
               <xs:enumeration value="forever"/>
            </xs:restriction>
         </xs:simpleType >
      </xs:union>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a MSG called
MSG_RoadSideAlert <ASN> <XML>.   In addition, this item may be used by data structures in other
ITS standards.
7.48 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&apos;0000-0000
            lowBeamHeadlightsOn (1) -- B&apos;0000-0001
            highBeamHeadlightsOn (2) -- B&apos;0000-0010
            leftTurnSignalOn (4) -- B&apos;0000-0100
            rightTurnSignalOn (8) -- B&apos;0000-1000
            hazardSignalOn (12) -- B&apos;0000-1100
            automaticLightControlOn (16) -- B&apos;0001-0000
            daytimeRunningLightsOn (32) -- B&apos;0010-0000
            fogLightOn (64) -- B&apos;0100-0000
            parkingLightsOn (128) -- B&apos;1000-0000
         </xs:appinfo>