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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.
              <xs:restriction base="xs:NMTOKEN">
                 <xs:enumeration value="base64Binary"/>
              </xs:restriction>
           </xs:simpleType>
         </xs:attribute>
      </xs:extension>
   </xs:simpleContent>
</xs:complexType>
<xs:simpleType name="VehicleRequestStatus-string">
   <xs:restriction base="xs:base64Binary">
      <xs:length value="2"/>
   </xs:restriction>
</xs:simpleType >
In addition, this item may be used by data structures in other ITS standards.
Remarks: The MSB bit (the brakes-on bit) is used in the general sense of a vehicle which is not moving or
proceeding towards to light.  Examples of use would be a response vehicle that has stopped short of the
light, but more typically a transit vehicle making a stop to load/unload before reaching the light.  This bit
can be used by the signal system to disregard a request. 
7.147 Data Element: DE_VehicleStatusDeviceTypeTag
Use: The VehicleStatusDeviceTypeTag element is an enumeration of every possible value which can be
found in the VehicleStatusDeviceType data frame.  It is used to denote that value (and hence also the
length) of the data which follows it.  
ASN.1 Representation:
VehicleStatusDeviceTypeTag ::= ENUMERATED {
   unknown            (0),
   lights             (1),  -- Exterior Lights
   wipers             (2),  -- Wipers
   brakes             (3),  -- Brake Applied                
   stab               (4),  -- Stability Control        
   trac               (5),  -- Traction Control        
   abs                (6),  -- Anti-Lock Brakes        
   sunS               (7),  -- Sun Sensor        
   rainS              (8),  -- Rain Sensor        
   airTemp            (9),  -- Air Temperature    
   steering           (10),
   vertAccelThres     (11), -- Wheel that Exceeded the
   vertAccel          (12), -- Vertical g Force Value  
   hozAccelLong       (13), -- Longitudinal Acceleration        
   hozAccelLat        (14), -- Lateral Acceleration        
   hozAccelCon        (15), -- Acceleration Confidence 
   accell4way         (16),
   confidenceSet      (17),
   obDist             (18), -- Obstacle Distance        
   obDirect           (19), -- Obstacle Direction        
   yaw                (20), -- Yaw Rate        
   yawRateCon         (21), -- Yaw Rate Confidence
   dateTime           (22), -- complete time
   fullPos            (23), -- complete set of time and
                            -- position, speed, heading
   position2D         (24), -- lat, long
   position3D         (25), -- lat, long, elevation
   vehicle            (26), -- height, mass, type
   speedHeadC         (27), 
   speedC             (28),
   
   ... -- # LOCAL_CONTENT
   }
   -- values to 127 reserved for std use
   -- values 128 to 255 reserved for local use
XML Representation:
<xs:simpleType name="VehicleStatusDeviceTypeTag" >