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

Source Element	Destination Element	Flow
City of Midland Field Equipment	City of Midland Fire and EMS Vehicles	local signal preemption request
	City of Midland Police Vehicles	local signal preemption request
	EZ Rider Fixed Route Transit Vehicles	local signal priority request
City of Odessa Field Equipment	City of Odessa Fire and EMS Vehicles	local signal preemption request
City of Odessa Field Equipment	EZ Rider Fixed Route Transit Vehicles	local signal priority request
Private Vehicles	TxDOT Odessa District Field Sensors	request tag data
TxDOT Odessa District Field Sensors	Private Vehicles	vehicle probe data

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