The triquetra has been found on runestones in Northern Europe and on early Germanic coins. It presumably had pagan religious meaning and it bears a resemblance to the Valknut, a symbol associated with Odin.
G Scale Trains are usually referred to as Garden Trains since they are the largest of the model trains and are used outdoors as well as indoors.
At its maximum length of 710 feet (216 m), BART has the longest trains of any metro system in the United States. The system also features car widths of 10.5 feet (3.2 m) (the same width as a Budd Metroliner), a maximum gradient of four percent, and a minimum curve radius of 394 feet (120 m) on the main lines.