Left turn from service road only signs
Purpose: These signs tell you that you can only turn left when entering the intersection from the service road.
Designated lane signs
Purpose: These signs indicate which lane you need to be in to turn when you approach the intersection or exit. You will see these signs over traffic lanes on busy, multiple-lane roads when approaching intersections or exits.
Overhead motorway signs
Purpose: These signs show which lane you should be in for a particular: .