The driver in problem 2 stops at an intersection with a two-way stop sign. Assume that the width of the intersection in 24 ft and the car is 20 ft long. If the driver's perception-reaction time is 0.75 seconds, determine if he can clear the intersection safely for the following conditions? (a) When the through traffic is quite heavy and the average gap between vehicles is 5 seconds. (b) If the average gap between vehicles increases to 10 seconds.