Sectional Information-Based Collision Warning System Using Roadside Unit Aggregated Connected-Vehicle Information for a Cooperative Intelligent Transport System

Table 1

Data source for four collision warning systems.

		ICWS	HCWS	SCWS	VCWS
Information of leading vehicle	Speed	Average (infrastructure)	Average (infrastructure)	Average (vehicle)	Individual (vehicle)
	Acceleration	Average (infrastructure)	Average (infrastructure)	Average (vehicle)	Individual (vehicle)
Information of subject vehicle	Speed	Average (infrastructure)	Individual (vehicle)	Individual (vehicle)	Individual (vehicle)
	Acceleration	Average (infrastructure)	Individual (vehicle)	Individual (vehicle)	Individual (vehicle)
	Space headway	Average (infrastructure)	Average (infrastructure)	Individual (vehicle)	Individual (vehicle)