ASTM 5 GHz Data Link: Standard Specification for 5.9 GHz Data Link Layer

Source Element	Destination Element	Flow
City of Abilene Public Works Vehicles	City of Abilene Work Zone Equipment	work zone warning notification
City of Abilene Traffic Signals	City of Abilene Fire Vehicles	local signal preemption request
City of Brownwood PWD Vehicles	City of Brownwood Work Zone Equipment	work zone warning notification
Commercial Vehicles	TxDOT Abilene District Field Sensors	request tag data
Commercial Vehicles	TxDOT Brownwood District Field Sensors	request tag data
County Road and Bridge Vehicles	County Road and Bridge Field Equipment	work zone warning notification
Municipal PWD Vehicles	Municipal ITS Field Equipment	work zone warning notification
TxDOT Abilene District Field Sensors	Commercial Vehicles	vehicle probe data
TxDOT Abilene District Traffic Signals	City of Abilene Fire Vehicles	local signal preemption request
TxDOT Brownwood District Field Sensors	Commercial Vehicles	vehicle probe data
TxDOT Brownwood District Traffic Signals	City of Brownwood Fire Vehicles	local signal preemption request
TxDOT West Central Texas Maintenance Vehicles	TxDOT Abilene District Work Zone Equipment	work zone warning notification
TxDOT West Central Texas Maintenance Vehicles	TxDOT Brownwood District Work Zone Equipment	work zone warning notification

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