Add project files.

Assets/Scripts/TrafficSystem/TrafficNode.cs

@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class TrafficNode : MonoBehaviour
+{
+    [SerializeField]
+    private List<TrafficNode> nextTrafficNodes;
+
+    public List<TrafficNode> GetNextTrafficNodes() { return nextTrafficNodes; }
+
+    public void AddNextNode(TrafficNode node)
+    {
+        nextTrafficNodes.Add(node);
+    }
+    private void OnDrawGizmos()
+    {
+        Gizmos.color = Color.green;
+        Gizmos.DrawSphere(transform.position, 0.2f);
+        foreach (TrafficNode node in nextTrafficNodes)
+        {
+            if (node != null)
+            {
+                Gizmos.color = Color.blue;
+                Gizmos.DrawLine(transform.position, node.transform.position);
+            }
+        }
+    }
+}