https://www.waze.com/location?h=dp3qzppvw

Touhy and Mt Prospect Road. Turn South off Touhy onto Mt Prospect. Have your ORD yellow-card ID ready. When you get down to the toll-booth-like gatehouses... you want the bank on the RIGHT. The huts on the left-fork are for delivery trucks.

Follow Mt Prospect road until you get to a stop-light. Turn left. Keep going until the road becomes one-lane each direction... you're close! Look for a sign on the right that says AA Employee lot (right under the tower, & by the AA hangars).

Park here, near one of the bus-pick-ups labeled 1, 2, or 3. Write down where you parked because you will forget after a week. Wear your Yellow-card ID so the driver can see it. Ride the bus in to gate G19 and go to work.

You can catch the bus back to your car from Gate G19, or by going down the elevator behind K19.