What does a white reflector (cat's eye) placed on the road mean?
No passing
Fire hydrant
White marks the left side of the road
White marks the centre line
White reflective markers (cat's eyes) appearing in the center of the road indicate the middle of the road. For further reference: yellow reflective markers (cat's eyes) correspond to a solid yellow line, which signifies a no overtaking zone. Blue reflective markers (cat's eyes) indicate the presence of a nearby fire hydrant.