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SAE J2735-Draft-Rev29 [issued: 12-11-08]
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171 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
the SPAT message.
ASN.1 Representation:
SignalState ::= OCTET STRING (SIZE(1))
-- With bits set as follows:
-- Bit 7 (MSB) Set if the state is currently active
-- only one active state can exist at a time, and
-- this state should be sent first in any sequences
-- Bits 6~4 The preempt or priority value that is
-- being described.
-- Bits 3~0 the state bits, indicating either a
-- preemption or a priority use as follows:
-- If a preemption: to follow the
-- preemptState object of NTCIP 1202 v2.19f
-- See PreemptState for bit definitions.
-- If a prioirty to follow the
-- tspInputStatus object utilized in the
-- NYC ASTC2 traffic controller
-- See PriorityState for bit definitions
XML Representation:
<xs:complexType name="SignalState" >
<xs:simpleContent>
<xs:annotation>
<xs:documentation>
With bits set as follows:
Bit 7 (MSB) Set if the state is currently active
only one active state can exist at a time, and
this state should be sent first in any sequences
Bits 6~4 The preempt or priority value that is
being described.
Bits 3~0 the state bits, indicating either a
preemption or a priority use as follows:
If a preemption: to follow the
preemptState object of NTCIP 1202 v2.19f
See PreemptState for bit definitions.
If a prioirty to follow the
tspInputStatus object utilized in the
NYC ASTC2 traffic controller
See PriorityState for bit definitions
</xs:documentation>
</xs:annotation>
<xs:extension base="SignalState-string" >
<xs:attribute name="EncodingType" use="required">
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="base64Binary"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="SignalState-string">
<xs:restriction base="xs:base64Binary">
<xs:length value="2"/>
</xs:restriction>
</xs:simpleType >
In addition, this item may be used by data structures in other ITS standards.
Remarks: Note that in use this object is enclosed in an outer sequence which identifies if it is describing a
preemption or a priority use.