Automobile racing originated in France in 1894, almost immediately after the construction of the first successful petrol-fueled autos, and it appeared in the US the following year. Open-road races were banned in France in 1903, however, after they led to 8 fatalities. Today, there are several different categories of racing. In open-wheel, stock-car, and other types of circuit auto races, flags are displayed to communicate instructions to competitors. What does a black flag signify? Discuss