Cycling in Basingstoke yesterday, on what I understand to be a mixed pedestrian/cycling route, I saw a road sign I'm not familiar with. A red rectangle, with white border, and white lettering. The lettering said 'pedestrians' with a straight ahead arrow beneath. I browsed through several PDFs of road signs, the closest I came was a 'temporary road hazard' [PDF], but that doesn't make any sense. Anyone know what it means?