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**F40CFan**Just out of curiosity;

The doors on the 5000 thru 2200 series cars are refered to as "quarter" doors or "blinker" doors. I can understand the quarter door name as there are 4 doors to each entryway.

Does anyone know the origin of the "blinker" reference?

The doors on the 5000 thru 2200 series cars are refered to as "quarter" doors or "blinker" doors. I can understand the quarter door name as there are 4 doors to each entryway.

Does anyone know the origin of the "blinker" reference?