You want to join the motorway. What driving line should you follow?

Your answer is correct because driving line number 3 is the appropriate lane to join the motorway in this situation.

Here’s why: When merging onto a motorway, you must use the lane that allows you to smoothly enter the main road without disrupting the flow of traffic. In this image, the lanes are marked with arrows showing possible driving lines, and the third lane (line no. 3) leads directly to the motorway entrance.

The first and second lanes do not lead onto the motorway and would take you in other directions. Also, the traffic light is green, and you have the right of way, as shown by the priority sign (yellow diamond), so you should follow the lane that continues onto the motorway safely.

Remember, always choose the lane that corresponds to your intended direction and allows for safe and smooth merging onto the motorway. This helps maintain traffic flow and prevents confusion or accidents.