John Rowland wrote:
I've recently noticed that a lot of the plastic lit-up bollards on traffic
islands seem to be wrong - for instance, a plain white disc where there
should be a leftward arrow, or a leftward arrow where there should be two
diverging arrows, etc.

Even worse is the number that aren't illuminated at night, or are so
filthy that the illumination doesn't show at all. The highway's people
are obviously trying to save a few bob here; although they may find it
difficult to escape liability when a motorcyclist runs into one of
their unlit obstacles, loses a leg and sues them for negligence!
Perhaps they could venture outside their cosy little local authority
world of astronomic salaries, inflation-proof pensions and automatic
promotion for long enough to look at this problem.