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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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238 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
Used By: This entry is used directly by one other data structure in this standard, a DF called
standards.
Remarks: Errors in LRMS ASN.1 were corrected.
8.16 Data Frame: DF_Height:frame [LRMS]
Use: A vertical height expressed as either an altitude with respect to a vertical datum, or a vertical level
from -128 to +127, where level 0 is the ground surface, or ground level of a structure. For highway
intersections or other transportation features, the zero level is the ground surface level, whether or not
traffic occurs on the ground surface through the intersection or brunnel. For example, for bridges, the
lowest level of the bridge would be level +1 and, for tunnels, the highest level would be level -1. For
parking structures or buildings, the zero level is that level called "ground" or "main" or "lobby" or "first"
floor, or otherwise most closely associated with the surrounding ground surface. Note that for a building,
the VerticalLevel may not correspond to the official number of or label on a floor, but refers to the relative
level with respect to the zero level. This concept is useable in countries with differing numbering
conventions for building floors.
ASN.1 Representation:
Height ::= CHOICE {
altdatum SEQUENCE {
altitude Distance,
verticalDatum VerticalDatum OPTIONAL
}, -- # UNTAGGED
-- removed: verticalLevel VerticalLevel
elevation DSRC.Elevation
}
XML Representation:
<xs:complexType name="Height" >
<xs:choice>
<xs:sequence>
<xs:element name="altitude" type="Distance" />
<xs:element name="verticalDatum" type="VerticalDatum" minOccurs="0"/>
</xs:sequence>
<!-- removed: verticalLevel VerticalLevel -->
<xs:element name="elevation" type="dsrc:Elevation" />
</xs:choice>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
Remarks: Note that in the DSRC system of use, the entry for "verticalLevel VerticalLevel" has been
replaced by the local form of Elevation.
8.17 Data Frame: DF_ITIS-Codes_And_Text [ITIS]
Use: The use of ITIS codes interspersed with free text. The complete set of ITIS codes can be found in
Volume Two of the J2540 Standard. This is a set of nealry 1,500 items which are used to encode common
events and list items in ITS.
ASN.1 Representation:
ITIScodesAndText ::= SEQUENCE (SIZE(1..100)) OF SEQUENCE {
item CHOICE {
itis ITIScodes,
text ITIStext
} -- # UNTAGGED
}
XML Representation:
<xs:complexType name="ITIScodesAndText" >
<xs:sequence minOccurs="1" maxOccurs="100">