Final answer:
Yes, if you see a green arrow on the signal after arriving at a crossroad, you can proceed to turn left.
Step-by-step explanation:
Yes, if you see a green arrow on the traffic signal after arriving at a crossroad, you can proceed to turn left. The green arrow indicates that the left turn is allowed and you have the right of way. However, be sure to yield to any pedestrians or oncoming traffic that may have the right of way.