{"product_id":"atl-7912","title":"ATLAS O 21ST CENTURY SIGNAL SYSTEM - FOUR PACK (2 RAIL)","description":"\u003cp\u003e*Many of the PRR type position lights signals are still in service on today s rail lines. Quite a few have been updated to a full color aspect signaling. In the position light format, green is vertical, yellow is diagonal, and red is horizontal. The center light is usually removed and a blank cover put in its place. Now, Atlas O realistically recreates this signal in miniature. Using the acclaimed 21st Century Signal System electronics, prototypical signaling is a reality for your layout. Fully compatible with all Atlas O signal products.\u003c\/p\u003e","brand":"Atlas","offers":[{"title":"Default Title","offer_id":53475970187571,"sku":"ATL 7912","price":289.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/oldenginehouse.com\/en-us\/products\/atl-7912","provider":"Old Engine House","version":"1.0","type":"link"}