My switching system enforce various rules to make a switch. One, the switching system acts on time pattern. There're certain patterns on chart showing when market is most likely in range, in trend or in breakout, so statistically this switch method is around 80% accurate. Rule #2 is based on support and resistance levels on various timeframes. Support and resistance levels mostly indicate how far can price moves in trading range and when the market breaks out and create a new trend, so we can exploit this to make a switch too. Rule #3 is related to major economic events in economic calendar. It's 90% probability that market breaks out anytime around a major event.