At the airport, I panicked a little when I realized I had to cross several lanes of traffic to get to the car rental return. Fortunately, there was no one coming and I was able to get over safely but after the fact I read a tip that the airport is essentially a circle so if it is not safe to get over then just do a loop around working your way over as it is safe to do so and when you come back around you will be in the proper lane as needed.