What is the meaning of a circular white regulatory sign with a red border depicting a red diagonal bar across a silhouette of an animal cart and bicycle together?

1. Free parking for carts and bikes
2. Prohibition: non-motorized vehicles (animal carts and cycles) are strictly prohibited from entering that roadway (Prohibida la circulación de vehículos de tracción animal y ciclos)
3. Bicycle and horse race track
4. Commercial market entrance