|     SAE J2735-Draft-Rev26 [issued: 09-18-08]   -  52 -  This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.  MSG  MSG  MSG   In addition, this item may be used by data structures in other ITS standards.  6.10 Data Frame: DF_BumperHeights  Use:  The  DF Bumper Heights data frame conveys the height of the font and rear bumper of the vehicle.   ASN.1 Representation:    BumperHeights ::= SEQUENCE {     frnt       BumperHeightFront,      rear       BumperHeightRear     }  XML Representation:    <xs:complexType name="BumperHeights" >        <xs:sequence>           <xs:element name="frnt" type="BumperHeightFront" />           <xs:element name="rear" type="BumperHeightRear" />        </xs:sequence>  </xs:complexType>  Used By:  This entry is used directly by one other data structure in this standard, a DF called  DF_VehicleStatus <ASN> <XML>.   In addition, this item may be used by data structures in other ITS  standards.  6.11 Data Frame: DF_Circle  Use:  The Circle data frame used used to define a circle centered at a given point  and extended to the given  raduis.  It is typically used to describe the location of signs so that the receiving vehicle can determine if the  sign applies to them and their current path.    ASN.1 Representation:    Circle ::= SEQUENCE {     center   Position3D,     raduis   CHOICE {                 raduisSteps  INTEGER (0..32767),                                 -- in unsigned values where                                 -- the LSB is in units of 2.5 cm                 miles        INTEGER (1..2000),                 km           INTEGER (1..5000)              } --# UNTAGGED     }  XML Representation:    <xs:complexType name="Circle" >        <xs:sequence>           <xs:element name="center" type="Position3D" />           <xs:choice >              <xs:element name="raduisSteps" >                 <xs:simpleType>                    <xs:restriction base="xs:unsignedShort">                       <xs:maxInclusive value="32767"/>                    </xs:restriction>                 </xs:simpleType>              </xs:element>              <!-- in unsigned values where              the LSB is in units of 2.5 cm -->              <xs:element name="miles" >                 <xs:simpleType>                    <xs:restriction base="xs:unsignedShort">  |