can't say. I think of cars with full width cabs and only one end car to car door as "a" IINM the vendor designation for mid train use--door each end--is a "C" which I believe SMART does not have. The day I rode the train was full and I never left the vestibule area because there were no handholds in the open floor area. When watching from lineside, I can't tell what the interior configuration is.