指标推出背景及思考：如何在大盘安全的情况下操作半仓或重仓操作，在大盘风险的时候轻仓或空仓；最大程度上避免来回做过山车，尽可能保留下盈利，减少亏损。
由此推出大盘红绿灯，当然个股也适用，尤其适用有趋势大牛股。
提供源码，仅供大家参考。
{红绿灯主图指标}
MA5:MA(CLOSE,5);
MA10:MA(CLOSE,10);
MA20:MA(CLOSE,20);
MA60:MA(CLOSE,60);
STICKLINE(CLOSE>OPEN,CLOSE,OPEN,3,0),COLORRED;
STICKLINE(CLOSE>OPEN,OPEN,LOW,0.1,0),COLORRED;
STICKLINE(CLOSE>OPEN,CLOSE,HIGH,0.1,0),COLORRED;
STICKLINE(CLOSE<OPEN,CLOSE,OPEN,3,0),COLORGREEN;
STICKLINE(CLOSE<OPEN,OPEN,HIGH,0.1,0),COLORGREEN;
STICKLINE(CLOSE<OPEN,CLOSE,LOW,0.1,0),COLORGREEN;
DRAWICON(CROSS(MA5,MA10),LOW*0.98,1);
DRAWICON(CROSS(MA10,MA5),HIGH*1.02,2);
DRAWKLINE(HIGH,OPEN,LOW,CLOSE);
DRAWTEXT_FIX(1,0.005,0.02,0,'红绿灯'),COLORYELLOW;
