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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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136 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
heading) which, when set to one, indicate that travel or motion along that angle is allowed. Typically used
to indicate a gross direction of travel to which the enclosing message or data frame applies. For example a
value of 0x8181 would indicate travel both directions due East and due West. A 2 byte value.
ASN.1 Representation:
HeadingSlice ::= INTEGER (0..65535) -- Each bit 22.5 degree starting from
-- North and moving Eastward (clockwise)
-- Define global enums for this entry
noHeading HeadingSlice ::= 0
allHeadings HeadingSlice ::= 65535
from000-0to022-5degrees HeadingSlice ::= 1
from022-5to045-0degrees HeadingSlice ::= 2
from045-0to067-5degrees HeadingSlice ::= 4
from067-5to090-0degrees HeadingSlice ::= 8
from090-0to112-5degrees HeadingSlice ::= 16
from112-5to135-0degrees HeadingSlice ::= 32
from135-0to157-5degrees HeadingSlice ::= 64
from157-5to180-0degrees HeadingSlice ::= 128
from180-0to202-5degrees HeadingSlice ::= 256
from202-5to225-0degrees HeadingSlice ::= 512
from225-0to247-5degrees HeadingSlice ::= 1024
from247-5to270-0degrees HeadingSlice ::= 2048
from270-0to292-5degrees HeadingSlice ::= 4096
from292-5to315-0degrees HeadingSlice ::= 8132
from315-0to337-5degrees HeadingSlice ::= 16334
from337-5to360-0degrees HeadingSlice ::= 32758
XML Representation:
<xs:simpleType name="HeadingSlice" >
<xs:annotation>
<xs:documentation>
Each bit 22.5 degree starting from
North and moving Eastward (clockwise)
Define global enums for this entry
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:unsignedShort"/>
</xs:simpleType>
Used By: This entry is directly used by the following 4 other data structures in this standard (record type,
descriptive name, ASN.1, and XML name (if present) of each):
DF
<XML>, and
DF
<XML>, and
MSG
<XML>, and
MSG
In addition, this item may be used by data structures in other ITS standards.
Remarks: See also the heading DE used to define a specific single heading value found in other parts of
the DSRC message set.
7.54 Data Element: DE_HighPriorityFreightTrainAlarm
Use: The HighPriorityFreightTrainAlarm data element will be used to enumerate various type of
preemption events.