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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.
The frame of references and axis of rotation used shall be accordance with that defined in SAE J670, Issued 1976-
07 and its successors. Note the definitions provided in Figure 1 (Tire Axis System) and Figure 2 (Directional
Control Axis Systems).  
ASN.1 Representation:
PositionConfidence ::= ENUMERATED {
   notEquipped (0),  -- B'0000  Not Equipped
   a500m   (1), -- B'0001  500m  or about 5 * 10 ^ -3 decimal degrees
   a200m   (2), -- B'0010  200m  or about 2 * 10 ^ -3 decimal degrees
   a100m   (3), -- B'0011  100m  or about 1 * 10 ^ -3 decimal degrees
   a50m    (4), -- B'0100  50m   or about 5 * 10 ^ -4 decimal degrees 
   a20m    (5), -- B'0101  20m   or about 2 * 10 ^ -4 decimal degrees 
   a10m    (6), -- B'0110  10m   or about 1 * 10 ^ -4 decimal degrees 
   a5m     (7), -- B'0111  5m    or about 5 * 10 ^ -5 decimal degrees 
   a2m     (8), -- B'1000  2m    or about 2 * 10 ^ -5 decimal degrees 
   a1m     (9), -- B'1001  1m    or about 1 * 10 ^ -5 decimal degrees 
   a50cm  (10), -- B'1010  0.50m or about 5 * 10 ^ -6 decimal degrees 
   a20cm  (11), -- B'1011  0.20m or about 2 * 10 ^ -6 decimal degrees 
   a10cm  (12), -- B'1100  0.10m or about 1 * 10 ^ -6 decimal degrees 
   a5cm   (13), -- B'1101  0.05m or about 5 * 10 ^ -7 decimal degrees 
   a2cm   (14), -- B'1110  0.02m or about 2 * 10 ^ -7 decimal degrees 
   a1cm   (15)  -- B'1111  0.01m or about 1 * 10 ^ -7 decimal degrees 
   } 
XML Representation:
<xs:simpleType name="PositionConfidence" >
      <xs:annotation>
         <xs:appinfo>
            notEquipped (0) -- B&apos;0000  Not Equipped
            a500m (1) -- B&apos;0001  500m  or about 5 * 10 ^ -3 decimal degrees
            a200m (2) -- B&apos;0010  200m  or about 2 * 10 ^ -3 decimal degrees
            a100m (3) -- B&apos;0011  100m  or about 1 * 10 ^ -3 decimal degrees
            a50m (4) -- B&apos;0100  50m   or about 5 * 10 ^ -4 decimal degrees
            a20m (5) -- B&apos;0101  20m   or about 2 * 10 ^ -4 decimal degrees
            a10m (6) -- B&apos;0110  10m   or about 1 * 10 ^ -4 decimal degrees
            a5m (7) -- B&apos;0111  5m    or about 5 * 10 ^ -5 decimal degrees
            a2m (8) -- B&apos;1000  2m    or about 2 * 10 ^ -5 decimal degrees
            a1m (9) -- B&apos;1001  1m    or about 1 * 10 ^ -5 decimal degrees
            a50cm (10) -- B&apos;1010  0.50m or about 5 * 10 ^ -6 decimal degrees
            a20cm (11) -- B&apos;1011  0.20m or about 2 * 10 ^ -6 decimal degrees
            a10cm (12) -- B&apos;1100  0.10m or about 1 * 10 ^ -6 decimal degrees
            a5cm (13) -- B&apos;1101  0.05m or about 5 * 10 ^ -7 decimal degrees
            a2cm (14) -- B&apos;1110  0.02m or about 2 * 10 ^ -7 decimal degrees
            a1cm (15) -- B&apos;1111  0.01m or about 1 * 10 ^ -7 decimal degrees
         </xs:appinfo>
         <xs:documentation>       
            Encoded as a 4 bit value
         </xs:documentation>
      </xs:annotation>
      <xs:union>
         <xs:simpleType>
            <xs:restriction base="xs:unsignedInt">
               <xs:minInclusive value="0"/>
               <xs:maxInclusive value="15"/>
            </xs:restriction>
         </xs:simpleType>
         <xs:simpleType>
            <xs:restriction base="xs:string">
               <xs:enumeration value="notEquipped"/>
               <xs:enumeration value="a500m"/>
               <xs:enumeration value="a200m"/>
               <xs:enumeration value="a100m"/>