1) Ancient Roman vehicle 2) German award 
A quadriga (Latin quadri-, four, and iugum, yoke) is a car or chariot drawn by four horses abreast (the Roman Empire`s equivalent of Ancient Greek tethrippon). It was raced in the Ancient Olympic Games and other contests. It is represented in profile as the chariot of gods and heroes on Greek vases and in bas-relief. The quadriga was adopted in a....[award] Quadriga is an annual German award sponsored by Netzwerk Quadriga gGmbH, a non-profit organization based in Berlin. The award recognizes four people or groups for their commitment to innovation, renewal, and a pioneering spirit through political, economic, and cultural activities. The award consists of a small statue resembling the ...
two-wheeled carriage drawn by four horses
• (n.) A car or chariot drawn by four horses abreast.
A four-horse chariot. 
Quad·ri'ga noun ; plural Quadrigæ . [ Latin See Quadrijugous .] (Rom. Antiq.) A car or chariot drawn by four horses abreast. 
The Quadriga was an ancient Greek and Roman two-wheeled chariot drawn by four horses abreast and used for racing.
(Latin) a two-wheeled chariot drawn by four horses.
A four-horse chariot, sometimes shown on coins as being pulled by other creatures for ceremonial purposes. Ben Hur raced a fast quadriga in the film.
a two-wheeled chariot drawn by four horses harnessed abreast. Cf.