Co-ordinated traffic signals

Where you'll see it

On the left-hand side of the carriageway before an intersection

What it means

To inform you that the traffic signals on this route are co-ordinated and that the signals will be green at all the subsequent intersections if you maintain the indicated speed

What you must do

If possible maintain the recommended speed. However, make sure that it is safe to enter every intersection and look out for drivers that do not yield. The speed indicated is a recommendation and not a speed limit

Source: Signs manual IN14