According to streetlevel imagery, not all street signs in the area display directional prefixes. Therefore, adding them would be a violation of the "on-the-ground" rule. This doesn't even count the fact that some streets' directional prefixes are "mismatched" (i.e., "North Main Street" without "South Main Street"). However, because these are still important for addresses, I've preserved them in `name:full` and `name:prefix`, in line with what Utah does.