How do I limit AI controlled object turns on L and T shape crossroads?

Hey, guys!

I'm new to C# and Unity. Trying to make a simple chasing game in my free time.

The goal is to catch an object under AI controls with an object controlled by a player. AI and the player can move only by road.

Level example - https://prnt.sc/u41ti3

I move both objects with transform.forward speed* and turn them with 90 and -90 angles with Turn Triggers. Screenshot - https://prnt.sc/u41wzb

I have several questions: 1. How to limit AI turns on L and T shape crossroads? I have no problems with 4 side crossroads type. 2. I need to know from which side AI approaches to the crossroad to make the correct turn.

AI object turning script code:

using System.Collections; using System.Collections.Generic; using System.Numerics; using UnityEngine;

public class TargetObjectRotator : MonoBehaviour { private readonly int[] directions = { 0, 90, -90 };

 void OnTriggerEnter(Collider other)
 {
     
     if (other.gameObject.CompareTag("TurnTriggerFree"))
     {
         transform.Rotate(0, directions[Random.Range(0, 3)], 0, Space.Self);
     }

 }

}

Trying to solve the issues for about 3 days already. Or maybe there are any other more elegant solutions. Would appreciate any help. Thanks!