Add project files.

Assets/Scripts/TrafficSystem/TrafficParticipant.cs

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+using UnityEngine;
+
+public class TrafficParticipant : MonoBehaviour
+{
+    [SerializeField]
+    private TrafficNode nextNode;
+
+    [SerializeField]
+    private TrafficNode currentTrafficNode;
+
+    [SerializeField]
+    private float speed = 5f;
+
+    private void Start()
+    {
+        if (nextNode == null)
+        {
+            ChooseNextNode();
+        }
+    }
+    private void Update()
+    {
+        if (nextNode != null)
+        {
+            transform.position = Vector3.MoveTowards(transform.position, nextNode.transform.position, speed * Time.deltaTime); if (transform.position == nextNode.transform.position)
+            {
+                Arrived();
+                ChooseNextNode();
+            }
+        }
+        else
+        {
+            ChooseNextNode();
+        }
+
+
+
+    }
+
+    private void Arrived()
+    {
+        Debug.Log("Arrived");
+        currentTrafficNode = nextNode;
+        nextNode = null;
+    }
+
+    private void ChooseNextNode()
+    {
+        Debug.Log("Choose next node");
+        if (nextNode == null)
+        {
+            nextNode = currentTrafficNode.GetNextTrafficNodes()[Random.Range(0, (currentTrafficNode.GetNextTrafficNodes().Count))];
+        }
+    }
+
+    private void OnDrawGizmos()
+    {
+        if (nextNode != null)
+        {
+            Gizmos.color = Color.red;
+
+            Gizmos.DrawLine(transform.position, nextNode.transform.position);
+        }
+    }
+}