 |
 |
 |
 |
|
 |
 |
SAE J2735-Draft-Rev28 [issued: 11-10-08]
-
170 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
Used By: This entry is used directly by one other data structure in this standard, a DF called
DF_VehicleStatus <ASN> <XML>. In addition, this item may be used by data structures in other ITS
standards.
Remarks: It is recommended that Automotive Manufacturers divide the range of their Rain Sensors into 8
resistance ranges corresponding to the above scale. For Example: a sensor that has a resistance range from
12K Ohms (Max Rain Fall) to 250 Ohms (No Rain Fall) will have the following resistance value ranges:
# 0=250 to 1749 Ohms
# 1=1750 to 3249 Ohms
# 2=3250 to 4749 Ohms
# 3=4750 to 6249 Ohms
# 4=6250 to 7749 Ohms
# 5=7750 to 9249 Ohms
# 6=9250 to 10749 Ohms
# 7= 10501 to 12000 Ohms
7.108 Data Element: DE_RequestedItem
Use: The Requested Item data element is used to specify what item (or items) is being requested in a
CommonSafetyRequest message sent to other vehicles. The request item may be broadcast by other
vehicles the Part II content of the BSM or the ala carte message that they transmit.
ASN.1 Representation:
RequestedItem ::= ENUMERATED {
reserved (0),
itemA (1),
-- consisting of 2 elements:
-- lights ExteriorLights
-- lightBar LightbarInUse
itemB (2),
-- consisting of:
-- wipers a SEQUENCE
itemC (3),
-- consisting of:
-- brakeStatus BrakeSystemStatus
itemD (4),
-- consisting of 2 elements:
-- brakePressure BrakeAppliedPressure
-- roadFriction CoefficientOfFriction
itemE (5),
-- consisting of 4 elements:
-- sunData SunSensor
-- rainData RainSensor
-- airTemp AmbientAirTemperature
-- airPres AmbientAirPressure
itemF (6),
-- consisting of:
-- steering a SEQUENCE
itemG (7),
-- consisting of:
-- accelSets a SEQUENCE