It seems like you are describing red and white reflective signs with different dimensions and two types of mounts, possibly used for "Convoi Agricole," "Wide Load," and "Oversize" warnings. These signs are typically designed to ensure visibility and warn other road users about potential hazards or special vehicles on the road.
The sign sizes provided:
1. 423 mm x 423 mm
2. 150 mm x 560 mm
3. 150 mm x 280 mm
These signs likely serve different purposes based on their size and text. The larger sizes may be more suitable for mounting on vehicles or trailers to enhance visibility, while the smaller size could be used for additional warnings or information.
The two types of mounts can refer to different ways these signs can be attached to vehicles or structures. It's important to ensure that these signs are securely attached and clearly visible from all angles to effectively communicate the warning message.
The specific signs listed, such as "Convoi Agricole," "Wide Load," and "Oversize," indicate the type of warning or information being conveyed. "Convoi Agricole" typically refers to an agricultural convoy, while "Wide Load" and "Oversize" are common warnings for vehicles carrying oversized or wide loads that require special attention from other road users.
Overall, these red and white reflective signs with varying dimensions and messages serve as important warning signs to improve road safety and communication for vehicles transporting special or oversized loads.