Unless you get dropped off right at the entrance, you will not need to be that concerned about airport parking lot hazards. Otherwise, try not to rush as you are moving along, and keep a firm hold on your luggage handles. Take extra time when getting on and off shuttles and watch your feet as you go up and down the steps. Parking lots can have debris in them that can block your path, so step well around them. If you see construction areas, keep as far away as possible.