"Dave" wrote in message
...

The same goes for traffic lights. There is a traffic light controlled
roundabout near here and if you are in the R/H lane, you can not see the
colour of the light until the last minute, because of the angle the lights
are presented to the driver. (You can't see the stop lines until the last
minute either, because of the contour of the road.)

That would be to slow you down.
You have to slow down to see if its ok to go.