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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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148 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
DF
<XML>, and
DF
<XML>, and
DF
<XML>, and
DF
<XML>, and
MSG
In addition, this item may be used by data structures in other ITS standards.
Remarks: [Note the value range was in error in the past few editions, now corrected.]
7.78 Data Element: DE_LayerID
Use: The LayerID is a data concept used uniquely identity the layer of a geographic map fragment such as
an intersection. Note that the layer type is used simply as a means to express a layer within a transmitted
message, it has no value as a unique or permanent naming system for the map object (such as an
intersection or any of its component parts).
ASN.1 Representation:
LayerID ::= INTEGER (0..100)
XML Representation:
<xs:simpleType name="LayerID" >
<xs:restriction base="xs:unsignedByte">
<xs:maxInclusive value="100"/>
</xs:restriction>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a MSG called
MSG_MapData (GID Layer) <ASN> <XML>. In addition, this item may be used by data structures in
other ITS standards.
7.79 Data Element: DE_LayerType
Use: The LayerType is a data concept used uniquely identity the type of information to be found in a layer
of a geographic map fragment such as an intersection.
ASN.1 Representation:
LayerType ::= ENUMERATED {
none (0),
mixedContent (1), -- two or more of the below types
generalMapData (2),
intersectionData (3),
curveData (4),
roadwaySectionData (5),
parkingAreaData (6),
sharedLaneData (7),
... -- # LOCAL_CONTENT
}
-- values to 127 reserved for std use
-- values 128 to 255 reserved for local use
XML Representation:
<xs:annotation>
<xs:appinfo>
none (0)
mixedContent (1) -- two or more of the below types
generalMapData (2)
intersectionData (3)
curveData (4)
roadwaySectionData (5)