Why are license plates for cargo vehicles now blue and not red?

Why are license plates for cargo vehicles now blue and not red?

RICO’s Q — Lately, I’ve been noticing more heavy trucks, pickups, and cargo vans—those marked with “C” and “CL”—sporting blue license plates instead of the usual red ones that used to set work or commercial vehicles apart. At first, I wondered if the Registro Nacional (National Property Registry) had simply run out of red plates. Given how slow some state agencies can be, it seemed plausible. But when I asked around, not even a friend involved i…