Extra arrows can give drivers earlier warning
With those painted arrows on road lanes showing the permitted turns at the next junction, often a driver on seeing an arrow at the last minute, finds himself in the wrong lane and his attempts to change hold everyone up.
Even worse, when stopped at traffic lights, we get green for 'go', but nothing moves as the driver ahead is signalling left or right, blocking his own lane and the one he is trying to get into.
An earlier warning would help drivers to select lanes sooner, while the traffic is still flowing.
Two more arrows could be the answer with, say, a three-quarter size arrow about 15 metres behind the existing ones, plus a half-size arrow another 15 metres further back. Drivers would soon become skilled in being able to gauge the distance to the next intersection by the size of the arrows, thus allowing him to make lane changes in good time.