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SAE J2735-Draft-Rev18 [issued: 06-26-07] 
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
         <xs:complexType>
            <xs:sequence>
               <xs:element name="tag">
                  <xs:simpleType>
                     <xs:restriction base="xs:string">
                        <xs:minLength value="1"/>
                        <xs:maxLength value="20"/>
                     </xs:restriction>
                  </xs:simpleType>
               </xs:element>
               <xs:element name="value">
                  <xs:simpleType>
                     <xs:restriction base="xs:string">
                        <xs:minLength value="1"/>
                        <xs:maxLength value="200"/>
                     </xs:restriction>
                  </xs:simpleType>
               </xs:element>
            </xs:sequence>
         </xs:complexType>
      </xs:element>
      <!-- sets of addtional named data values -->
   </xs:sequence>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
Remarks: When used in DSRC message to add "XML like" tagging then the delimiting values of "<" and
">" should appear in the tag and values strings. This is not required in message transmissions which contain
an explicit tagging system. If the tag and value string are to be expressed in XML added values of "<" or
">" shall be removed from the content.
6.35 Data Frame: DF_UpdateVector
Use: A minimal report of the vehicles position, speed, and heading.  Used in the probe vehicle message as
one of the subsequent reports of position information (preceded by a longer frame with additional
information which does not vary).
ASN.1 Representation:
UpdateVector ::= SEQUENCE {
   lastMin             DMinute,          -- 1 byte
   lastSec             DSecond,          -- 2 bytes
   long                Longitude,        -- 4 bytes, 1/8th microdegree
   lat                 Latitude,         -- 4 bytes, 1/8th microdegree
   heading             Heading,          -- 1 byte, 1.4 deg
   speed               Speed,            -- 1 byte 
   elevation           Elevation,        -- 3 byte 
   ... -- # LOCAL_CONTENT 
   } -- a size of 16 bytes
XML Representation:
<xs:complexType name="UpdateVector" >
      <xs:annotation>
         <xs:documentation>       
            a size of 16 bytes
         </xs:documentation>
      </xs:annotation>
      <xs:sequence>
         <xs:element name="lastMin" type="DMinute" />
         <!-- 1 byte -->
         <xs:element name="lastSec" type="DSecond" />
         <!-- 2 bytes -->
         <xs:element name="long" type="Longitude" />
         <!-- 4 bytes,  1/8th microdegree -->
         <xs:element name="lat" type="Latitude" />
         <!-- 4 bytes,  1/8th microdegree -->
         <xs:element name="heading" type="Heading" />