Why might marking systems like breakaway signs be implemented on expressways?

Marking systems like breakaway signs are specifically designed to minimize damage during accidents. These signs are constructed in such a way that they can detach from their bases upon impact, which significantly reduces the risk of injury to drivers and passengers during collisions. By allowing the signs to break away rather than remain rigid and sturdy, they prevent more severe consequences for occupants of vehicles that may hit them.

The implementation of such systems contributes to overall road safety, especially on expressways where high speeds and heavier traffic volumes increase the potential for accidents. Other functions, such as enhancing visibility, informing drivers of speed limits, or signaling turns, serve different purposes but do not directly relate to the concept of reducing damage or injury in the event of a crash.