ASTM PS 105-99: Specification for Dedicated Short Range Communication (DSRC) Data Link Layer: Medium Access and Logical Link Control

Source Element	Destination Element	Flow
City of Longview Field Equipment	City of Longview Fire/EMS Vehicles	local signal preemption request
City of Tyler Field Equipment	City of Tyler Fire Vehicles	local signal preemption request
City of Tyler Field Equipment	Private EMS Vehicles	local signal preemption request
Commercial Vehicles	DPS Inspection Stations	driver log request
	DPS Inspection Stations	electronic screening request
	DPS Inspection Stations	on-board safety request
	DPS Inspection Stations	pass/pull-in
	DPS Inspection Stations	request tag data
	DPS Inspection Stations	safety inspection record
	DPS Inspection Stations	safety inspection request
	DPS Inspection Stations	screening event record
	TxDOT Tyler District CVO Corridor System	request tag data
DPS Inspection Stations	Commercial Vehicles	driver log
	Commercial Vehicles	on-board safety data
	Commercial Vehicles	safety inspection record
	Commercial Vehicles	screening event record
	Commercial Vehicles	tag data
Private Vehicles	TxDOT Tyler District CVO Corridor System	request tag data
TxDOT Tyler District CVO Corridor System	Commercial Vehicles	vehicle probe data
TxDOT Tyler District CVO Corridor System	Private Vehicles	vehicle probe data
TxDOT Tyler District Traffic Signals	City of Longview Fire/EMS Vehicles	local signal preemption request
	City of Tyler Fire Vehicles	local signal preemption request
	Private EMS Vehicles	local signal preemption request

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