源码：城市交通流状况实时更新与显示

【实例截图】

【核心代码】

        /// <summary>
        /// 定义车辆将行驶的路线，这种思路的前提是假设每一辆车都有明确目的地，那它在出发之前就能确定走什么线路到达目的地。
        /// 分主干路的"井"字结构下总共有24个路口,一旦确定了开始路口最多的结束路口将有11种选择（或者更多）,
        /// 全部列举的数据量和计算量很大，基于设计、机器性能和开发成本的考虑，只生成其中的几条线路作为本次模拟。
        /// </summary>
        /// <returns></returns>
        private List<RoadRoute> defalutRoadList()
        {
            #region 定义单向车道，根据布局来分割定义，不建议修改
            RectangleF main1L1 = new RectangleF(bs.MainRoad1.X, bs.MainRoad1.Y, bs.MainRoad1.Width, bs.MainRoad1.Height / 4);
            RectangleF main1L2 = new RectangleF(bs.MainRoad1.X, bs.MainRoad1.Y   bs.MainRoad1.Height / 4, bs.MainRoad1.Width, bs.MainRoad1.Height / 4);

            RectangleF main1R1 = new RectangleF(bs.MainRoad1.X, bs.MainRoad1.Y   bs.MainRoad1.Height / 2, bs.MainRoad1.Width, bs.MainRoad1.Height / 4);
            RectangleF main1R2 = new RectangleF(bs.MainRoad1.X, bs.MainRoad1.Bottom - bs.MainRoad1.Height / 4, bs.MainRoad1.Width, bs.MainRoad1.Height / 4);

            RectangleF main2L1 = new RectangleF(bs.MainRoad2.X, bs.MainRoad2.Y, bs.MainRoad2.Width, bs.MainRoad2.Height / 4);
            RectangleF main2L2 = new RectangleF(bs.MainRoad2.X, bs.MainRoad2.Y   bs.MainRoad2.Height / 4, bs.MainRoad2.Width, bs.MainRoad2.Height / 4);

            RectangleF main2R1 = new RectangleF(bs.MainRoad2.X, bs.MainRoad2.Y   bs.MainRoad2.Height / 2, bs.MainRoad2.Width, bs.MainRoad2.Height / 4);
            RectangleF main2R2 = new RectangleF(bs.MainRoad2.X, bs.MainRoad2.Bottom - bs.MainRoad2.Height / 4, bs.MainRoad2.Width, bs.MainRoad2.Height / 4);

            RectangleF brch1L = new RectangleF(bs.branchRoad1.X, bs.branchRoad1.Y, bs.branchRoad1.Width / 2, bs.branchRoad1.Height);
            RectangleF brch1R = new RectangleF(bs.branchRoad1.X   bs.branchRoad1.Width / 2, bs.branchRoad1.Y, bs.branchRoad1.Width / 2, bs.branchRoad1.Height);

            RectangleF brch2L = new RectangleF(bs.branchRoad2.X, bs.branchRoad2.Y, bs.branchRoad2.Width / 2, bs.branchRoad2.Height);
            RectangleF brch2R = new RectangleF(bs.branchRoad2.X   bs.branchRoad2.Width / 2, bs.branchRoad2.Y, bs.branchRoad2.Width / 2, bs.branchRoad2.Height);
            #endregion

            #region 定义线路及包含其中的单向车道信息，每条线路由多条单向车道合理组成，要注意合理
            RoadRoute r1 = new RoadRoute(); // 线路1
            RoadRoute r2 = new RoadRoute(); // 线路2
            RoadRoute r3 = new RoadRoute(); // 线路3
            RoadRoute r4 = new RoadRoute(); // 线路4
            RoadRoute r5 = new RoadRoute(); // 线路5
            RoadRoute r6 = new RoadRoute(); // 线路5

            RoadInfo r11 = new RoadInfo(main1L1, RoadSide.LeftSide);
            r11.AddRoadLights(getRoadLights(main1L1));
            r1.PartRoads = new List<RoadInfo>() { r11 };
            r1.StartDirection = StartAt.Right;

            RoadInfo r21 = new RoadInfo(main2R1, RoadSide.RightSide);
            r21.AddRoadLights(getRoadLights(main2R1));
            RoadInfo r22 = new RoadInfo(brch1R, RoadSide.RightSide);
            r22.AddRoadLights(getRoadLights(brch1R));
            r2.PartRoads = new List<RoadInfo>() { r21, r22 };
            r2.StartDirection = StartAt.Left;

            RoadInfo r31 = new RoadInfo(main1R2, RoadSide.RightSide);
            r31.AddRoadLights(getRoadLights(main1R2));
            RoadInfo r32 = new RoadInfo(brch1L, RoadSide.LeftSide);
            r32.AddRoadLights(getRoadLights(brch1L));
            RoadInfo r33 = new RoadInfo(main2R2, RoadSide.RightSide);
            r33.AddRoadLights(getRoadLights(main2R2));
            r3.PartRoads = new List<RoadInfo>() { r31, r32, r33 };
            r3.StartDirection = StartAt.Left;

            RoadInfo r41 = new RoadInfo(brch2L, RoadSide.LeftSide);
            r41.AddRoadLights(getRoadLights(brch2L));
            RoadInfo r42 = new RoadInfo(main2L1, RoadSide.LeftSide);
            r42.AddRoadLights(getRoadLights(main2L1));
            r4.PartRoads = new List<RoadInfo>() { r41, r42 };
            r4.StartDirection = StartAt.Top;

            RoadInfo r51 = new RoadInfo(main1L2, RoadSide.LeftSide);
            r51.AddRoadLights(getRoadLights(main1L2));
            r5.PartRoads = new List<RoadInfo>() { r51 };
            r5.StartDirection = StartAt.Right;

            RoadInfo r61 = new RoadInfo(main2L2, RoadSide.LeftSide);
            r61.AddRoadLights(getRoadLights(main2L2));
            RoadInfo r62 = new RoadInfo(brch1L, RoadSide.LeftSide);
            r62.AddRoadLights(getRoadLights(brch1L));
            r6.PartRoads = new List<RoadInfo>() { r61, r62 };
            r6.StartDirection = StartAt.Right;
            #endregion

            #region 红绿灯实时变换的事件订阅，为了车辆行驶时的数据同步比较用
            bs.SetSynDlgtHandle(r11.SynLightData);
            bs.SetSynDlgtHandle(r21.SynLightData);
            bs.SetSynDlgtHandle(r22.SynLightData);
            bs.SetSynDlgtHandle(r31.SynLightData);
            bs.SetSynDlgtHandle(r32.SynLightData);
            bs.SetSynDlgtHandle(r33.SynLightData);
            bs.SetSynDlgtHandle(r41.SynLightData);
            bs.SetSynDlgtHandle(r42.SynLightData);
            bs.SetSynDlgtHandle(r51.SynLightData);
            bs.SetSynDlgtHandle(r61.SynLightData);
            bs.SetSynDlgtHandle(r62.SynLightData);
            #endregion

            List<RoadRoute> list = new List<RoadRoute>() { r1, r2, r3, r4, r5, r6 };
            return list;
        }

        /// <summary>
        /// 获取单向车道内的交通灯
        /// </summary>
        private List<TrafficLightEntity> getRoadLights(RectangleF roadRectf)
        {
            List<TrafficLightEntity> rtnList = new List<TrafficLightEntity>();
            if (bs.TrafficLights != null && bs.TrafficLights.Count > 0)
            {
                rtnList = bs.TrafficLights.FindAll(tl => roadRectf.Contains(new RectangleF(tl.Position, CommonSet.TrfcLightSize)));
            }
            return rtnList;
        }