 Thus, the monetary model predicts that the velocity of money will increase as a result of an excessive increase in the money supply.At the point when money velocity and prices rapidly accelerate in a vicious circle, hyperinflation is out of control, because ordinary policy mechanisms, such as increasing reserve requirements, raising interest rates, or cutting government spending will be ineffective and be responded to by shifting away from the rapidly devalued money and towards other means of exchange.During a period of hyperinflation, bank runs, loans for 24-hour periods, switching to alternate currencies, the return to use of gold or silver or even barter become common.