ASTM PS 111-98: Specification for Dedicated Short Range Communication (DSRC) Physical Layer using Microwave in the 902-928 MHz

Source Element	Destination Element	Flow
City of Wichita Falls Field Equipment	City of Wichita Falls Emergency Vehicles	local signal preemption request
City of Wichita Falls Field Equipment	Private Ambulance Vehicle	local signal preemption request
Commercial Vehicles	TxDOT Weigh in Motion	electronic screening request
	TxDOT Weigh in Motion	pass/pull-in
	TxDOT Weigh in Motion	request tag data
	TxDOT Weigh in Motion	screening event record
	TxDOT Wichita Falls District In-Vehicle Information Field Equipment	vehicle signage data
TxDOT Weigh in Motion	Commercial Vehicles	screening event record
TxDOT Weigh in Motion	Commercial Vehicles	tag data
TxDOT Wichita Falls District Traffic Signals	DPS Emergency Vehicles	local signal preemption request
	Other Municipal or County Emergency Vehicles	local signal preemption request
	Private Ambulance Vehicle	local signal preemption request

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