If a passenger car and an animal-drawn vehicle arrive at the same time at a narrowing in the road where the right-of-way is not marked, which of the two vehicles has the right-of-way?

Correct answer: The animal-drawn vehicle.

If they arrive at the same time, neither entered first, so the vehicle that has more difficulty maneuvering goes first. On the list of vehicle types, an animal-drawn vehicle ranks ahead of a passenger car, so the passenger car backs up. The backing distance only decides priority between vehicles of the same type or when one is not on the list.

Real Decreto 1428/2003, de 21 de noviembre, por el que se aprueba el Reglamento General de Circulación · Real Decreto 1428/2003 — Reglamento General de Circulación