IEEE P1556: Security/Privacy of Vehicle/RS Communications including Smart Card Communications

Source Element	Destination Element	Flow
Brownsville MPO Field Equipment	City/County Police and Fire Vehicles	local signal preemption request
Brownsville MPO Field Equipment	Public/Private EMS Vehicles	local signal preemption request
City of Brownsville Field Equipment	City/County Police and Fire Vehicles	local signal preemption request
City of Brownsville Field Equipment	Public/Private EMS Vehicles	local signal preemption request
City of Harlingen Field Equipment	City/County Police and Fire Vehicles	local signal preemption request
City of Harlingen Field Equipment	Public/Private EMS Vehicles	local signal preemption request
City of McAllen Field Equipment	City/County Police and Fire Vehicles	local signal preemption request
City of McAllen Field Equipment	Public/Private EMS Vehicles	local signal preemption request
City of Pharr Field Equipment	City/County Police and Fire Vehicles	local signal preemption request
City of Pharr Field Equipment	Public/Private EMS Vehicles	local signal preemption request
Commercial Vehicles	TxDOT Pharr District Bridge Corridor System	request tag data
Private Vehicles	TxDOT Pharr District Bridge Corridor System	request tag data
TxDOT Pharr District Bridge Corridor System	Commercial Vehicles	vehicle probe data
TxDOT Pharr District Bridge Corridor System	Private Vehicles	vehicle probe data
TxDOT Pharr District Traffic Signals	Public/Private EMS Vehicles	local signal preemption request

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