 |
 |
 |
 |
|
 |
 |
SAE J2735-Draft-Rev18 [issued: 06-26-07]
-
54 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
</xs:sequence>
</xs:complexType>
Used by: This entry is directly used by the following 3 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
DF
In addition, this item may be used by data structures in other ITS standards.
6.25 Data Frame: DF_PreemptionState
Use: The PreemptionState data frame lists the current preemption information for a specific signalized
intersection.
ASN.1 Representation:
PreemptionState ::= SEQUENCE {
item1 PreEmptionStateGeneral OPTIONAL,
item2 PublicSafetyVehicleApproaching OPTIONAL,
item3 TransitPreEmptionRequest OPTIONAL,
item4 HighPriorityFreightTrainAlarm OPTIONAL,
item5 VehicleStoppedInIntersection OPTIONAL, -- just use ITIS here !
... -- # LOCAL_CONTENT
}
PublicSafetyVehicleApproaching ::= INTEGER
TransitPreEmptionRequest ::= INTEGER
HighPriorityFreightTrainAlarm ::= INTEGER
VehicleStoppedInIntersection ::= INTEGER
XML Representation:
<xs:complexType name="PreemptionState" >
<xs:sequence>
<xs:element name="item1" type="PreEmptionStateGeneral" minOccurs="0"/>
<xs:element name="item2" type="PublicSafetyVehicleApproaching" minOccurs="0"/>
<xs:element name="item3" type="TransitPreEmptionRequest" minOccurs="0"/>
<xs:element name="item4" type="HighPriorityFreightTrainAlarm" minOccurs="0"/>
<xs:element name="item5" type="VehicleStoppedInIntersection" minOccurs="0"/>
<!-- just use ITIS here ! -->
<xs:element name="localPreemptionState" type="local:PreemptionState"
minOccurs="0"/>
</xs:sequence>
</xs:complexType>
Used by: This entry is used directly by one other data structure in this standard, a MSG called
MSG_SPAT (SIGNAL PHASE AND TIMING MESSAGE) <ASN> <XML>. In addition, this item
may be used by data structures in other ITS standards.
Remarks: This needs some working to make more uniform. It also needs to fit with the other pre-empt
work that exists in ITS.
6.26 Data Frame: DF_ReferenceLane
Use: A ReferenceLane data structure provides lane number, lane width and lane attributes within a
Approach structure. There is typically at least one ReferenceLane present and may be zero or more
ComputedLane objects as well in the enclosing Approach structure. The nodeList provide a detailed set of
offset values to map the path of the lane.
ASN.1 Representation:
ReferenceLane ::= SEQUENCE {
laneNumber LaneNumber,