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SAE J2735-Draft-Rev29 [issued: 12-11-08] 
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
ASN.1 Representation:
DataParameters ::= SEQUENCE {
   processMethod     IA5String(SIZE(1..255)) OPTIONAL, 
   processAgency     IA5String(SIZE(1..255)) OPTIONAL, 
   lastCheckedDate   IA5String(SIZE(1..255)) OPTIONAL, 
   geiodUsed         IA5String(SIZE(1..255)) OPTIONAL, 
   ... -- # LOCAL_CONTENT
   }
XML Representation:
<xs:complexType name="DataParameters" >
      <xs:sequence>
         <xs:element name="processMethod"  minOccurs="0">
            <xs:simpleType>
               <xs:restriction base="xs:string">
                  <xs:minLength value="1"/>
                  <xs:maxLength value="255"/>
               </xs:restriction>
            </xs:simpleType>
         </xs:element>
         <xs:element name="processAgency"  minOccurs="0">
            <xs:simpleType>
               <xs:restriction base="xs:string">
                  <xs:minLength value="1"/>
                  <xs:maxLength value="255"/>
               </xs:restriction>
            </xs:simpleType>
         </xs:element>
         <xs:element name="lastCheckedDate"  minOccurs="0">
            <xs:simpleType>
               <xs:restriction base="xs:string">
                  <xs:minLength value="1"/>
                  <xs:maxLength value="255"/>
               </xs:restriction>
            </xs:simpleType>
         </xs:element>
         <xs:element name="geiodUsed"  minOccurs="0">
            <xs:simpleType>
               <xs:restriction base="xs:string">
                  <xs:minLength value="1"/>
                  <xs:maxLength value="255"/>
               </xs:restriction>
            </xs:simpleType>
         </xs:element>
         <xs:element name="localDataParameters" type="local:DataParameters"
minOccurs="0"/>
      </xs:sequence>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
6.14 Data Frame: DF_DDate
Use: The DSRC style date is a compound value consisting of finite-length sequences of integers (not
characters) of the form: "yyyy, mm, dd" -  as defined below.  Because the length of each element is known,
no inner element tagging is normally used in transmission.  Thus, this data frame occupies 4 bytes in total.
ASN.1 Representation:
DDate ::= SEQUENCE {
   year    DYear,            -- 2 bytes
   month   DMonth,           -- 1 byte
   day     DDay              -- 1 byte
   }
XML Representation:
<xs:complexType name="DDate" >
      <xs:sequence>