What is the minimum requirement for the size of a red flag on the rear of a vehicle hauling explosives?

The minimum requirement for the size of a red flag on the rear of a vehicle hauling explosives is 12 inches square. This specification is crucial for ensuring visibility and alerting others on the road to the potential hazards associated with transporting explosives. The purpose of the flag is to clearly indicate that the vehicle is carrying dangerous materials, allowing for increased caution from other drivers and improving overall safety on the road.

The requirement for the size is determined by safety regulations, which emphasize the importance of making hazardous conditions easily recognizable. A flag of this size is large enough to be seen from a distance, even in lower visibility conditions, thus serving its intended purpose effectively. Having a consistent standard helps ensure that all operators are compliant, which further enhances safety across the board for both commercial operators and the public.