Let me see who can drive! What is your final answer ?

The final anwer is 2 3 1 
Why?

Because of RIGHT OF THE WAY.

Here cars on the right side has more right of the way than the one turning to the right side and see 1 above is turning left of the way. This means 1 must wait for 2 to go first and 3 to turn right of the way while 1 goes last because its own case is different.. 1 is turning left of the way here.