What does a red curb indicate about stopping or parking?

Answer: B — May not stop, stand, or park

A red curb signifies that the area is designated as a no-stopping zone, meaning that vehicles may not stop, stand, or park in that location at any time. This regulation helps maintain clear access for emergency vehicles and ensures that roadways remain unobstructed for the safety of all road users. Areas with red curbs are often near fire hydrants or in locations where stopping could pose a hazard. It's crucial for drivers to be aware of these markings to comply with traffic laws and avoid fines or penalties associated with illegal parking or stopping.