Dots - save yourself some dough. Go to a local sign shop and have them cut out 3/4" dots from your selected material. They'll probably do it for a fraction of what you'll pay for a commercially available dots...
If the diamond plate isn't new, make sure you prep it well -light acid wash for aluminum.
Although I certainly understand your premise, rear reflectice chevrons make a remarkable difference in the visibilty of apparatus both day and night and responding or returning. IMO, it is actually a NFPA recommendation that makes sense and I can buy in to.
Originally Posted by johnsb