The car was parked on the (L) side of the traffic signal.
What gives you that impression?
There's a good picture of the car at the end of the Hughes Film. This Hughes film snippet showing the car is included in, "Unsolved History JFK, Death in Dealey Plaza" presentation. That presentation is on YOU TUBE. At the 5:52 mark, you can see the car is parked to the (L) of the pole. The rectangular signage attached to this same pole is the, "NO PARKING At Any Time" sign. You can clearly read this Sign on the actual DVD. In conjunction with our seeing the car and the signal light pole on the (L) of Officer Baker as he runs across the Island on the Couch and Darnell films, the position of this car is not in question. It is clearly on the (L) of both the Traffic Signal Pole and the Street Light Pole. The Street Light Pole has the, "NO PARKING...." sign on it. The Traffic Signal Pole has a home plate shaped sign attached to it. The bottom of this sign comes to a point. The car is on the (L) of both of these poles.