A curious phenomenon in Michigan. For some reason, in the 1960's it was decided that no one should turn left off of a divided highway onto a crossroad. So, highways were modified in order to provide little exit ramps on the left side of the lane just past the intersection. You then go past your desired turn, merge left and drive across the median, turn left onto the opposing direction of the highway, cut across traffic, and then finally turn right onto your desired road.

In addition, say you are coming on a crossroad to the highway and you want to turn left onto the highway. What you have to do is turn right onto the highway, cut across trafic to exit onto the median crossover, and then turn left onto the highway in your desired direction.

Now, perhaps there's a good reason for all of this, but I don't know... Here in Ohio, where there's a problem with left turns off of a highway we just put in an exit lane on the highway for left turns at the intersection. Why they think it's safer to make people merge across freeway traffic in an attempt to make a left turn is beyond me...