It looks like you’re asking about the meaning of the vertical road sign (sinal vertical) and related context. I can help with that. Direct answer

• In many road-sign systems, a vertical sign typically communicates a specific traffic rule, indication, or hazard for a stretch of road. The exact meaning depends on the country and the specific shape, color, and symbol on the sign. For example, some vertical signs indicate one-way or two-way traffic, roadworks ahead, or a dead end, while others indicate restrictions or permissions.

If you can share:

• The country or region (since traffic signage varies by jurisdiction),
• A photo or a detailed description of the sign (shape, colors, any numbers or symbols),

I can give a precise, definitive meaning and explain how it affects driving behavior, allowed maneuvers, and any penalties for non-compliance.