Speed limits almost always have repeater signs at regular intervals, particularly when it's not national speed limit. The recommended max speed signs on bends a

Speed limits almost always have repeater signs at regular intervals, particularly when it's not national speed limit. The recommended max speed signs on bends are different from speed limit signs too. If there's not a red circle, it's not mandatory. The exception is national speed limit signs, which would require the car to see if it's a dual carriageway or not so it can switch between 60 and 70.