Right-of-Way at an Uncontrolled T-Junction

At a T-junction with no signs, the general rule is that traffic on the major road has the right-of-way over traffic emerging from the minor road. The broken white line across your lane indicates you must give way to traffic on the major road. Therefore, you must yield to both vehicles. To turn right, you need to cross the near lane and enter the far lane. The vehicle from the left is 40 m away at 50 km/h, which is about 13.9 m/s. It will reach the junction in about 40 / 13.9 ≈ 2.9 seconds. The vehicle from the right is 60 m away at 45 km/h, which is 12.5 m/s, and will reach in about 60 / 12.5 = 4.8 seconds. If you start from rest, your vehicle might take about 3-4 seconds to clear the junction, depending on acceleration. Turning right across the near lane, you would first conflict with the vehicle from the left if you turn immediately. Since that vehicle arrives in 2.9 seconds, you do not have enough time to safely turn right in front of it. You could wait for the left vehicle to pass, but then you must also consider the right vehicle. After the left vehicle passes, the right vehicle will be closer. You should wait until both are clear. The passenger conversation is a distraction; you should focus on the road. The safe action is to stop at the line and wait for a sufficient gap in both directions.

If you turn left, you would be joining the major road in the direction of the vehicle coming from the left. You would need to yield to that vehicle because it is on the major road and you are emerging. The vehicle from the left is 40 m away and will arrive in about 2.9 seconds. Turning left, you would accelerate and merge into the leftward lane. You would need a gap that allows you to accelerate to a speed matching the traffic without causing the approaching vehicle to brake. Given the vehicle's speed of 50 km/h (13.9 m/s) and your starting speed of 0, you would need several seconds to accelerate and merge safely. With only 2.9 seconds, it is too tight. You should wait for the left vehicle to pass, and then check for a safe gap. The vehicle from the right is not a conflict for a left turn because you are turning away from it. However, you must still ensure that after the left vehicle passes, there is no other traffic. The key difference is that for a left turn, you only need to yield to traffic from the left (and any traffic already on the major road from the right if you would cross their path, but turning left you join the flow going left, so the right vehicle is behind you). Actually, when turning left, you join the lane going left, so the vehicle from the right is approaching from behind your intended direction? Wait, the major road runs left-right. If you turn left, you will be traveling to the left. The vehicle from the right is coming from the right, so it will be behind you after you turn? No, if you turn left, you will be in the lane going left. The vehicle from the right is coming from the right, so it is approaching the junction from the opposite direction? Actually, the major road runs left-right, so if you turn left, you will be heading left. The vehicle from the right is coming from the right, so it will be approaching the junction from the right side. After you turn left, you will be in the leftward lane, and the vehicle from the right will be in the rightward lane (coming towards you). So you do not conflict with the vehicle from the right if you turn left, because you are in different lanes. However, you must ensure that the lane you enter is clear. So for a left turn, you mainly need to yield to traffic from the left. The vehicle from the left is the primary concern. With 2.9 seconds, it is unsafe to turn left in front of it. You should wait for it to pass, then proceed when clear. The vehicle from the right does not affect a left turn because it is in the opposite direction lane. So the decision changes: you only need to wait for the left vehicle, not both. But you still must ensure the way is clear.