Removed some of STF405 comments to produce a cleaner version

--STF405: doubled defined, renamed

--DecentralizedSituation ::= SEQUENCE {

DecentralizedEnvironmentalNotificationMessage ::= SEQUENCE {

	management	DecentralizedSituationManagement,	--  container with DEN management and version control

	-- version of the DENM indicating updates from the same originator ITS station; value of 255 is used for the  cancellation message sent from the originator ITS station

	-- STF405: changed inline definition to explicit

	-- dataVersion	INTEGER(0..255),

	dataVersion	DataVersion,  	-- 1 byte

	-- time when the DENM is deleted from the DEN management and the information related to the event is set as invalid.. If it is not provided, it indicates that the expiry time is unkown by the originator ITS station	

	expiryTime	TimeStamp  	OPTIONAL, 	-- 6 byte

		eventmobility	BOOLEAN,

		-- whether the event is caused by the originator ITS station, set to TRUE if it is the case. FALSE if it is a location that may cause danger

-- STF405: changed type to be more self explaining

--		causeType	BOOLEAN,

		causeType   ENUMERATED { itsStation, geographicalRegion },

		-- whether the event is physicalling relevant to the  receiving ITS station.. Set to TRUE if it is the case

-- STF405: changed type to be more self explaining

--		relevant	BOOLEAN,

        relevant ENUMERATED {physicallyRelevant, difficultDrivingConditions },

		-- whether the event is time critical road safety event, set to TRUE if it is the case.

		timeCritacality	BOOLEAN,

		-- more characteristics may be added. 	

		...

	} OPTIONAL,

	-- tagged list to provide supplementary information  describing the event, may include DEs and EFs definied in [i.6] or [6]		

	-- STF405: changed to profile based on the changes in the CAM module

	-- taggedList	SET SIZE(0..32) OF TaggedList OPTIONAL 

	-- optional taggedlist with TaggedValue  OPTIONAL

	vehicleCommonParameters	VehicleCommonParameters OPTIONAL,

	profile ProfileParameters    OPTIONAL

}

	-- STF405: as the eventPosition CHOICe is extensible the EventArea type can be added when needed

	eventPosition	CHOICE	{

		-- the geographical position of the reference position 

--		refPosition	RefPosition,	

		refPosition	ReferencePositionVehicle,	

		...

	},

	...

}

--STF405: changed MessageID to inline definition, as in CAM

--MessageID ::=  	INTEGER (0..255) 

--STF405: uses imported TimeStamp type instead as this is actually referenced, LongTimeStamp never

--LongTimeStamp ::=	INTEGER (0.. 281474976710655)		

ActionID ::= SEQUENCE {

	stationID 	StationID,	-- a 4 byte value

	sequenceNo 	SequenceNo	-- a 2 byte value

}

--STF405: STRING not a valid ASN.1 type, using the CAM definition

--StationID ::=	STRING 		

-- station ID of the DENM originator ITS station	

SequenceNo ::=	INTEGER (0..65535)		-- increased by 1 each time a new event is detected by the same ITS  station.

-- STF405: changed to INTEGER as ENUMERATED is not applicable for handling

-- DataVersion ::= ENUMERATED {

-- 	firstVersion	(0),

-- 	secondVersion	(1),

-- 	cancellation	(255),

-- 	...

-- }

DataVersion ::= INTEGER {firstVersion(0),secondVersion(1),cancellation(255) } (0..255)

--STF405: removed as is expressed already in TimeStamp which is referenced only, furthermore OPTIONAL is syntactically incorrect

--LongTimeStamp ::=	INTEGER (0.. 281474976710655) 	OPTIONAL

-- 6byte, units of milliseconds.

Frenquency ::=	INTEGER (0..255)

-- STF405: no need for explicit type

--Reliability ::=	INTEGER (0..100)	

--7 bit

-- STF405: no need for explicit type

-- IsNegation ::=	BOOLEAN	

--1 bit

--STF405: removed OPTIONAL, as it is syntactically incorrect

--TrafficFlowEffect ::= 	INTEGER(0..7)	OPTIONAL

TrafficFlowEffect ::= 	INTEGER {

    trafficFlowUnknown(1), 

    freeTrafficFlow(2),

}

-- STF405: Changed to INTEGER as it allows to use cause codes in [3]

-- CauseCode ::= ENUMERATED  

-- 1 to 100 indicates causecode defined within [3]

-- 101 – 255 indicates causecode without being defined by [3]

-- {

--	reserved		(0),

--	dangerousDriving	(101),

--	intersectionViolation	(102),

--	vehicleProblem	(103),

--	intersectionCollision	(104),

--	hazardousLocation	(105),

--	...

--}

CauseCode ::= INTEGER {reserved(0),dangerousDriving(101),intersectionViolation(102),vehicleProblem(103),intersectionCollision(104),hazardousLocation(105) } (0..255)

-- STF405: changed type as it seems more applicable

-- SubCauseCode ::= ENUMERATED

-- {

-- 	unknown		(0),

-- 	subCauseCode1	(1),

-- 	subCauseCode2	(2),

-- 	...

-- }													

SubCauseCode ::= INTEGER {unknown(0)} (0..255)

--STF405: removed OPTIONAL, as it is syntactically incorrect

--LinkedCause ::= 	Situation		OPTIONAL

LinkedCause ::= 	Situation

--STF405: renamed to Severity

--LongTimeStamp ::= ENUMERATED...

Severity ::= ENUMERATED 		-- 1 byte

{

	informative		(1), 

	highestDanger	(4)		--danger level 3: 

}

--STF405: no need for explicit type

--EventCharact ::= SEQUENCE	

-- 1 byte

--{

-- whether the detected event is in mobility (moving vehicle) or static

--	mobility		BOOLEAN,

-- whether the detected event is an ITS station, or is a geographical region

-- causeType		BOOLEAN,

-- whether the detected event is physically relevant to the received ITS stations (accident) or describing difficult driving conditions (fog on the road)

-- relevant	BOOLEAN,

-- whether a detected event is time critical (e.g., electronic braking light) or not (e.g. fog on the road)

--	timeCriticality	BOOLEAN,

--	...

--}

--STF405: The CAM definition is used instead, removed OPTIONAL, as it is syntactically incorrect

-- TaggedList ::= SEQUENCE

-- {

-- 	...

-- }

--STF405: replaced by imported type from CAM

--RefPosition ::= SEQUENCE {

--	situationLat	Latitude,  

--	situationLong	Longitude,  

--	situationAlt	Altitude,

--	accuracy	PositionAccuracy,	

--	speed	Speed	OPTIONAL,	

--	direction	Direction	OPTIONAL

--}

Altitude ::= INTEGER (-10000..16767215) 	-- multiples of 0.1 m

PositionAccuracy ::= OCTET STRING (SIZE(4))	

--STF405: removed Direction, as it is imported from CAM

--Direction ::= INTEGER{north(0), east(7200), south(14400), west(21600)} (0..28799)

--STF405: removed OPTIONAL, as it is syntactically incorrect

Speed ::= INTEGER (-32765..32765)	 -- multiples of 0.01 m/s 

--STF405: no need for explicit type

--LocationRef ::=	CHOICE {

	-- consequence position of the trace location referencing mechanism

--	trace	[0]	TraceLocData,

	-- more location referencing mechanism to be added

--	...

--}

TraceLocData ::=	SEQUENCE {

	--3 bits, identifier of the trace

	traceID	INTEGER(0 .. 7),	

	ptLat 	Latitude,							--a 4 bytes value 

	ptLong 	Longitude,						--a 4 bytes value

--STF405: type name is made consistent with CAM definitions

--	ptAlt 	Altitude,

	ptAlt 	Elevation,

	...

	--STF405: removed repetition