Picking up someone at Los Angeles International Airport when you are alone in the car can be traumatic. There is no way to tell whether or not the flight you are meeting is on time except to leave your car at the curb and enter the terminal. By the time you've done this, your car will be ticketed by security. I have a suggestion.
Why couldn't the airlines put up a computerized sign outside their terminals for motorists to view? This sign would designate the arrivals for say, 30 minutes, telling the on-time and late arrivals.