1. A road, path, or route that is officially closed, restricted, or forbidden for public use or access
The old mountain road was marked as a prohibited road due to landslide danger.
A velha estrada da montanha foi marcada como estrada proibida devido ao perigo de deslizamentos.
2. A metaphorical reference to an action, behavior, or path that is not allowed or discouraged
For him, that career path was a prohibited road after his conviction.
Para ele, esse caminho de carreira era uma estrada proibida após sua condenação.