崇文门三角地是个“X”型的路口,路口不大,交通流量却不小,高峰时机动车流量每小时5100辆,非机动车每小时6000多辆。通行稍有不畅,车辆就堵出一里多远。1998年,崇文交通支队调任素永到这个路口指挥交通。面对复杂的路面情况和严重的拥堵问题,任素永上岗时仔细观察路口情况,默记于心;下岗后在路边一站就是几个小时,观察、测绘路口及周边的道路情况。他还走访了途经这里的公交车队及周边地区20多个单位,广泛征求搞好路口交通秩序的良策。通过深入调研,他找到了这个路口21处交叉冲突点和4处交织冲突点。任素永对症下药,摸索出“四勤四看”指挥法。“四勤”即:眼勤看、腿勤转、话勤喊、勤指挥。“四 Chongwenmen triangle is a ”X “ type of intersection, the intersection is not large, the traffic flow is not small, peak motor vehicle traffic per hour 5100, non-motor vehicles more than 6000 vehicles per hour. Traffic is a bit sluggish and the vehicle blocks a mile. In 1998, Chongwen Traffic Detachment relocated to this juncture directing traffic. In the face of complex road conditions and serious congestion problems, any prime minister observes the intersection at the time of appointment, silently in mind; laid-off at the roadside station is a few hours to observe and map the intersection and the surrounding road conditions. He also visited more than 20 units passing by the bus fleet and the surrounding areas and solicited extensive measures to improve the traffic order at the junction. Through in-depth research, he found the intersection of 21 points of intersection and 4 intersections conflict points. Ren Suyong premeditated to find out ”four ground four see “ command law. ”Four ground “ Namely: Attentively look, leg diligence, call shouting, ground command. ”four