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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.
         <!-- estimate of accuracy for this location
         from [SAE-J2313::Location-quality]
         above two items form one 8 bit field -->
      </xs:sequence>
</xs:complexType>
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.
Remarks: The definitions for Lat-Long etc. follow those defined and found elsewhere in the SAE J2735 work on
DSRC message sets, which in turn are derived from the normal LRMS definitions.
8.10 Data Element: DE_HorizontalDatum:cd [LRMS]
Use: The underlying horizontal geodetic datum for a geographic coordinate.
ASN.1 Representation:
HorizontalDatum ::= ENUMERATED {wgs-84           (0), 
wgs-84egm-96     (1), 
nad83            (2), 
nad27            (3),
... -- # LOCAL_CONTENT
}
XML Representation:
<xs:simpleType name="HorizontalDatum" >
      <xs:annotation>
         <xs:appinfo>
            wgs 84 (0)
            wgs 84egm 96 (1)
            nad83 (2)
            nad27 (3)
         </xs:appinfo>
      </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="wgs 84"/>
               <xs:enumeration value="wgs 84egm 96"/>
               <xs:enumeration value="nad83"/>
               <xs:enumeration value="nad27"/>
            </xs:restriction>
         </xs:simpleType >
         <xs:simpleType>
            <xs:restriction base="local:HorizontalDatum" /> 
         </xs:simpleType>
      </xs:union>
</xs:simpleType>
In addition, this item may be used by data structures in other ITS standards.
8.11 Data Element: DE_Incident Response Equipment [ITIS]
Use: The ITIS enumeration list commonly refered to as "Incident Response Equipment," is assigned the upper byte
value of [39] (which provides for value ranges from 9984 to 10239, inclusive).  This list is formally called
"IncidentResponseEquipment" in the ASN.1 and XML productions.  The items in this enumeration list are not
allowed to be used as an event category classification.  This list contains a total of 72 different phrases.  The