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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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106 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
leftRear (2), -- B'0010 Left Rear Active
rightFront (4), -- B'0100 Right Front Active
rightRear (8), -- B'1000 Right Rear Active
allOn (15) -- B'1111 The condition All On
} -- to fit in 4 bits
XML Representation:
<xs:simpleType name="BrakeAppliedStatus-item" >
<xs:annotation>
<xs:appinfo>
allOff (0) -- B'0000 The condition All Off
leftFront (1) -- B'0001 Left Front Active
leftRear (2) -- B'0010 Left Rear Active
rightFront (4) -- B'0100 Right Front Active
rightRear (8) -- B'1000 Right Rear Active
allOn (15) -- B'1111 The condition All On
</xs:appinfo>
<xs:documentation>
to fit in 4 bits
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>
<xs:restriction base="xs:int">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="15"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="allOff"/>
<xs:enumeration value="leftFront"/>
<xs:enumeration value="leftRear"/>
<xs:enumeration value="rightFront"/>
<xs:enumeration value="rightRear"/>
<xs:enumeration value="allOn"/>
</xs:restriction>
</xs:simpleType >
</xs:union>
</xs:simpleType>
<xs:simpleType name="BrakeAppliedStatus">
<xs:list itemType="BrakeAppliedStatus-item"/>
</xs:simpleType>
In addition, this item may be used by data structures in other ITS standards.
Remarks: Current thinking of the committee members to deal with issue of trailer and long-axle style
vehicle is to have another message which can be used in these cases and which would convey the overall
length and style of the vehicle and trailer involved.
7.20 Data Element: DE_BrakeBoostApplied
Use: A data element which when set to "on" indicates emergency braking.
This data element is an on/off value which indicates engagement of the vehicle's brake boost assist
function. Brake boost assist is available on some vehicles. It detects the potential of a situation requiring
maximum braking and pre-charges the brake system even before the driver presses the brake pedal. This
situation is detected either by measuring a rapid release of the accelerator pedal or via a forward sensing
system. Some systems also apply full braking when the driver presses the pedal, even with a light force.
Multiple probe data reports re activation of brake boost at the same location is an indication of an
emergency situation on the road and is therefore of use to road authorities.
ASN.1 Representation:
BrakeBoostApplied ::= ENUMERATED {
notEquipped (0),
off (1),
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