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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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32 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
-- the best applicable Lane, from the MAP-SPAT-GID
-- zero sent if unknown
eventFlag EventFlags,
-- used to convey vehicle Panic Events,
-- Set to indicate "Intersection Violation"
... -- # LOCAL_CONTENT
}
XML Representation:
<xs:complexType name="IntersectionCollision" >
<xs:sequence>
<xs:element name="msgID" type="DSRCmsgID" />
<xs:element name="msgCnt" type="MsgCount" />
<xs:element name="id" type="TemporaryID" />
<xs:element name="secMark" type="DSecond" minOccurs="0"/>
<xs:element name="vmt" type="VehicleMotionTrail" />
<!-- a set of recent Bread Crumbs
might want to pick which one
patern to use in above -->
<xs:element name="intersetionID" type="IntersectionID" />
<!-- the applicable Intersection, from the MAP-GID
the best applicable movement, from the MAP-GID -->
<xs:element name="laneNumber" type="LaneNumber" />
<!-- the best applicable Lane, from the MAP-SPAT-GID
zero sent if unknown -->
<xs:element name="eventFlag" type="EventFlags" />
<!-- used to convey vehicle Panic Events,
Set to indicate "Intersection Violation" -->
<xs:element name="localIntersectionCollision" type="local:IntersectionCollision"
minOccurs="0"/>
</xs:sequence>
</xs:complexType>
Remarks: Note: This message can become superfluous given that the same information can also be sent in
the BSM (in part II) or in the alaCarte messages. An issue for further committee discussion.
5.7 Message: MSG_MapData (GID Layer)
Use: The MapData message is used as wrapper object to relates all the types of maps defined in the
standard. This includes such items as complex intersection descriptions (used with the SPAT message),
high speed curve outlines (used in curve safety alerts), and segment of roadway (used in platoon
applications). The contents of this message are at time informally referred to as the GID layer.
ASN.1 Representation:
MapData ::= SEQUENCE {
msgID DSRCmsgID,
msgCnt MsgCount,
-- updated when message content changes
name DescriptiveName OPTIONAL,
layerType LayerType OPTIONAL,
layerID LayerID OPTIONAL,
intersections SEQUENCE (SIZE(1..32)) OF
Intersection OPTIONAL,
-- other objects may be added at this layer, tbd,
-- this might become a nested CHOICE statement
-- roadSegments SEQUENCE (SIZE(1..32)) OF
-- RoadSegments OPTIONAL,
-- curveSegments SEQUENCE (SIZE(1..32)) OF
-- curveSegments OPTIONAL,
-- wanted: some type of data frame describing how
-- the data was determined/processed to go here
dataParameters DataParameters OPTIONAL,
crc MsgCRC,
... -- # LOCAL_CONTENT