Symbol	Definition	Units
	The average velocity of mixed traffic flow	mile/hour
	The vehicle by the total distance of a road	mile
	Some sections of the vehicle by the total time	hour
	The safe distance from driving	mile
	The length of self-driving, cooperating cars	mile
	The proportion of self-driving, cooperating cars	mile
	Through a section of distance	mile
	Through a road the total time of driving cars	hour
	Through a road the total time of self-driving cars	hour
	Under the influence of the driving cars, the self-drive delay time	hour
	The proportion of self-driving
	A road traffic flow	hour
	Some sections of the vehicle density
	A road block coefficient
	The average speed of driving cars	mile/hour
	The average speed of self-driving cars	mile/hour
	The average speed of zero flow	mile/hour