What is the function of cones when used as a barrier device?
Signage: Beacons and temporary signage
Cones as barrier devices serve to prohibit passage through the imaginary line that connects them, delineating hazardous or construction areas to ensure road safety.
Explanation
**Cones** are delineation devices used on roads to **prohibit passage**. Their main function is to prevent vehicles from crossing the **imaginary line** formed between them. This means that it is not only prohibited to pass over the cones, but also through the space between each of them. This measure is used to direct traffic and prevent vehicles from entering dangerous areas or zones where construction work is being carried out.
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