4.23 A driver arrives at a T-junction, as shown in Figure P4.23, and notices 10 cars ahead of him at the stop sign. It takes 3 seconds for each car to clear the intersection. Cars in the other direction arrive at an average of one car every N.) seconds in a Poisson process. Cars in the two directions alternate, one at a time, in crossing the intersection. What is the prob- ability that the driver will clear the intersection in 45 seconds or less? Single lane > 1-way O 0 STOP Sign 1-way single lane Figure P4.23 A T-junction