2.47
		t =	9	sec
		Time Period:	Peak
		Arrival Rate:	649		veh/day
		Arrival Rate:	27.0		veh/hour
		Arrival Rate (u):	0.0075		veh/sec
	P(No vehicles while backing out) = P(H >= 9)
		P(H >= t) = e-ut
		P(H >= 9) = e-(0.0075veh/sec)(9sec)
		P(H >= 9) = 0.935