What should drivers do when they see a 'road closed' sign?

When drivers encounter a 'road closed' sign, the appropriate action is to turn around and find an alternate route. This is vital for safety, as a 'road closed' sign indicates that the road is not safe for vehicles due to construction, hazards, or other obstructions. Ignoring this sign or attempting to drive through the closure can lead to dangerous situations, including accidents or becoming stranded. It is important for drivers to respect these signs as they are there to protect both drivers and pedestrians from potential harm. Finding an alternate route ensures that everyone can navigate safely around the closed area without risking safety or violating traffic laws.

The other options suggest either disregarding the sign or not directly addressing the closure, which does not align with safe driving practices and can create safety hazards on the road.