The barometric method constructs an index of relevant economic indicators to forecast future trends. It uses leading, coincidental, and lagging indicators. Leading indicators precede business cycle turning points. Coincidental indicators move with the business cycle. Lagging indicators follow turning points. For example, development of land by DDA indicates higher future demand for construction materials (coincidental) and housing loans (lagging). However, barometric forecasting is only 80-90% accurate in predicting turning points.