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SAE J2735-Draft-Rev18 [issued: 06-26-07]
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112 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
7.70 Data Element: DE_Short Longitude
Use: A shorted value of longitude representing the lower 16 bits of a 32 bit value. Taken together with the
Long Longitude data element, a complete value of longitude can be obtained which is identical in value
domain to the std ITS longitude with an LSB of one 1/8th micro degree. The longitude is the position of
the center of the vehicle, expressed in 1/8th micro degrees and based on the WGS-84 coordinate system,
represented in a 4 byte value.
ASN.1 Representation:
ShortLongitude ::= INTEGER (0..65535) -- lower 16 bits of a 32 bit Longitude
XML Representation:
<xs:simpleType name="ShortLongitude" >
<xs:annotation>
<xs:documentation>
lower 16 bits of a 32 bit Longitude
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:unsignedShort"/>
</xs:simpleType>
In addition, this item may be used by data structures in other ITS standards.
7.71 Data Element: DE_ShortElevation RETIRE THIS ONE
Use: Short Elevation, is a shortened value of Elevation, representing the least significant 8 bits of
DE_Elevation.
ASN.1 Representation:
ShortElevation ::= INTEGER (0..255) -- 10 cm LSB
XML Representation:
<xs:simpleType name="ShortElevation" >
<xs:annotation>
<xs:documentation>
10 cm LSB
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:unsignedByte"/>
</xs:simpleType>
In addition, this item may be used by data structures in other ITS standards.
7.72 Data Element: DE_SignalState
Use: A date element indicating the current and next signal state of a particular known lane or approach.
Used in the the SPAT frame. The data element is a 16-bit encoded string, allowing multiple values to be
indicated.
ASN.1 Representation:
SignalState ::= BIT STRING {
greenCircular (B0000000000000001), -- Green Circular
leftArrow (B0000000000000010), -- Left Arrow
throughArrow (B0000000000000100), -- Through Arrow
rightArrow (B0000000000001000), -- Right Arrow
flashing1 (B0000000000010000), -- Flashing ?WHAT?
yellowCircular (B0000000000100000), -- Yellow Circular
leftArrow2 (B0000000001000000), -- Left Arrow ??
throughArrow2 (B0000000010000000), -- Through Arrow
rightArrow2 (B0000000100000000), -- Right Arrow
flashing2 (B0000001000000000), -- Flashing ?WHAT?
redCircular (B0000010000000000), -- Red Circular
leftArrow3 (B0000100000000000), -- Left Arrow
throughArrow3 (B0001000000000000), -- Through Arrow