Austin Regional ITS Architecture

IEEE 1455-1999: Standard for Message Sets for Vehicle/Roadside Communications

Source Element	Destination Element	Flow
CapMetro Lessee Freight Cars	CapMetro Freight and Passenger Rail Operations Center	on-board safety data
CIty of Austin In-Vehicle Parking Meters	City of Austin Parking Enterprise	vehicle payment information
City of Austin Parking Enterprise	CIty of Austin In-Vehicle Parking Meters	vehicle payment request
	CIty of Austin In-Vehicle Parking Meters	vehicle payment update
	City of Austin Parking Meters	vehicle payment request
	City of Austin Parking Meters	vehicle payment update
City of Austin Parking Meters	City of Austin Parking Enterprise	vehicle payment information
Commercial Vehicles	City of Austin Field Sensors	traffic probe data
	City of Cedar Park Field Sensors	traffic probe data
	City of Georgetown Field Sensors	traffic probe data
	City of Round Rock Field Sensors	traffic probe data
	City of San Marcos Field Sensors	traffic probe data
	CTRMA Toll Plazas	traffic probe data
	CTRMA Toll Plazas	vehicle payment information
	Municipal ITS Field Equipment	traffic probe data
	Private Fleet Management Systems	on-board safety data
	TxDOT Austin District Field Sensors	traffic probe data
	TxDOT TOD Toll Plazas	vehicle payment information
CTRMA Toll Plazas	Commercial Vehicles	vehicle payment update
	Private Vehicles	vehicle payment update
Private Vehicles	City of Austin Field Sensors	traffic probe data
	City of Cedar Park Field Sensors	traffic probe data
	City of Georgetown Field Sensors	traffic probe data
	City of Round Rock Field Sensors	traffic probe data
	City of San Marcos Field Sensors	traffic probe data
	CTRMA Toll Plazas	traffic probe data
	CTRMA Toll Plazas	vehicle payment information
	Municipal ITS Field Equipment	traffic probe data
	TxDOT Austin District Field Sensors	traffic probe data
	TxDOT TOD Toll Plazas	vehicle payment information
Rail Operators Rail Cars	Rail Operations Centers	on-board safety data
TxDOT TOD Toll Plazas	Commercial Vehicles	vehicle payment update
	Private Vehicles	vehicle payment update