I agree Kly. But I've seen them turn left plenty of times.
However, the more I watch it, the more my conclusiion is reinforced that Raymond was crap as a father and husband.
I saw them go left again. I'm starting to think that maybe they go right when there's some relevance to being seen in the window. And yes, Raymond is a terrible dad and husband. It's peculiar that he constantly whines about what a terrible and unfeeling dad he had while he is indifferent to his own kids. This was evident when he took the wrong twin to the doctor.