Bollarsyadayada waxaa loo isticmaali karaa qaabab badan oo deyrar ah. Waxaa loo isticmaali karaa sidii loo kala sooci lahaa meelaha cagaarka ah ama ilaalinta meelo badan oo caamka ah, sida: baarkinnada ama barxadaha. Keliya khadka retro waxa ku jira walxo ka samaysan birta kaarboonka.
Farqiga u dhexeeya boodhadhka birta kaarboonka iyo birta aan-ka-soo-baxa lahayn ayaa ah in boodhadhka birta-la'aanta ahi ay leeyihiin hal midab oo keliya: qalin. Midabka bollard steel carbon wuxuu noqon karaa midab kasta oo lagu heshiisiin karo rinjiga, iyo qaybo kala duwan oo bir ah ayaa lagu dari karaa, sida budada dahabka ah iyo budada qalinka, si loo gaaro dhalaalka iyo qaabka dusha sare ee alaabta.
Qaabka madaxu wuxuu noqon karaa doorasho: Sare fidsan, Dusha sare, Muujinta sare, iyo sare jiirada.
Hawlaha dheeraadka ah sida nalalka LED-ka, cajalado milicsan, nalalka qorraxda, bambooyinka gacanta, iwm. waa ikhtiyaari.
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