Surely motorists turning into the road should give way to crossing pedestrians anyway? If a bit of red paint increases driver compliance, that seems good to me. I can name far bigger wastes of money in Norfolk, such as the NDR (A1270) budget overrun,
the botched Tombland section of the pink Norwich pedalway (discussed in an old thread on here, average cost £15k/m in the end after three goes IIRC) or the councils all hiring lawyers to face off at the inquiry into the Willows incinerator plan (county for the operator, borough for the residents).