 |
 |
 |
 |
|
 |
 |
SAE J2735-Draft-Rev15 [issued: 01-30-07]
-
84 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
In addition, this item may be used by data structures in other ITS standards.
7.44 Data Element: DE_Speed
Use: The vehicle speed expressed in signed units of 0.01 meters per second. Negative values imply the vehicle in
moving in reverse.
ASN.1 Representation:
Speed ::= INTEGER (-32765..32765) -- Units of 0.01 m/s
XML Representation:
<xs:simpleType name="Speed" >
<xs:annotation>
<xs:documentation>
Units of 0.01 m/s
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:short">
<xs:minInclusive value="-32765"/>
<xs:maxInclusive value="32765"/>
</xs:restriction>
</xs:simpleType>
Used by: This entry is directly used by the following 5 other data structures in this standard (record type, descriptive name,
ASN.1, and XML name (if present) of each):
DF
DF
DF
MSG
DF
In addition, this item may be used by data structures in other ITS standards.
7.45 Data Element: DE_StabilityControlStatus
Use: This data element reflects the current state of the stability control systems status.
The "Stability Control Status" Probe Data Element is intended to inform Probe Data Users whether the vehicle's
stability control unit was engaged at the time a Probe Data snapshot was taken. A typical stability control unit
uses the vehicle's yaw rate to determine how far off-axis a vehicle is while taking a turn. This data is correlated
with wheel speed, steering angle and acceleration position. If the vehicle is determined to be too far off-axis,
corrective action is taken by automatically applying braking force to separate wheels independent of the driver's
actions. The element informs the user if the vehicle is NOT equipped with a stability control system. If the vehicle
is equipped with a stability control system, the element reports whether the system is Off, or in an Active state.
ASN.1 Representation:
StabilityControlStatus ::= ENUMERATED {
notEquipped (0), -- B'00 Not Equipped
off (1), -- B'01 Off
on (2) -- B'10 On or active
}
XML Representation:
<xs:simpleType name="StabilityControlStatus" >
<xs:annotation>
<xs:appinfo>
notEquipped (0) -- B'00 Not Equipped