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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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173 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
7.109 Data Element: DE_ResponseType
Use: The response type which this vehicle is engaged in at the time an alerting message is being sent. A
this time only emergency and non-emergency are defined; however other types of operational modes are
expected to be added.
The type of response which a public safety, or other type of vehicle, is engaged in when transmitting
emergency alerts. Intended to be used as part of the DSRC safety message for public safety vehicles
operating in the area.
ASN.1 Representation:
ResponseType ::= ENUMERATED {
notInUseOrNotEquipped (0),
emergency (1),
nonEmergency (2),
pursuit (3)
-- all others Future Use
}
-- values to 127 reserved for std use
-- values 128 to 255 reserved for local use
XML Representation:
<xs:simpleType name="ResponseType" >
<xs:annotation>
<xs:appinfo>
notInUseOrNotEquipped (0)
emergency (1)
nonEmergency (2)
pursuit (3) -- all others Future Use
</xs:appinfo>
<xs:documentation>
values to 127 reserved for std use
values 128 to 255 reserved for local use
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:unsignedInt">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="3"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="notInUseOrNotEquipped"/>
<xs:enumeration value="emergency"/>
<xs:enumeration value="nonEmergency"/>
<xs:enumeration value="pursuit"/>
</xs:restriction>
</xs:simpleType >
</xs:union>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a MSG called
MSG_EmergencyVehicleAlert <ASN> <XML>. In addition, this item may be used by data structures
in other ITS standards.
Remarks: There are remaining issues with this data element, and changes may occur after serious review
by a number of different agencies types. For example, codes (such as NEMSIS codes) are not really
uniform and understood (even within a single service); the urgency of a "code 3" run is different in
different parts of the world. Perhaps the common element here is what action the receiving driver is
supposed to do (nothing, follow flagman, be alert, pull over, etc.). See also some of the "mandatory" ITIS
advice codes like this. For some applications, some slow speed maneuvering type codes are likely added in
future editions (moving a fire truck or tow truck around an incident scene, for example).