Bollard akpaka

Ihe mgbochi akpaka (a na-akpọkwa bollard akpaka a na-atụgharị azụ ma ọ bụ bollard eletriki ma ọ bụ bollard hydraulic) bụ ihe mgbochi nchekwa, ụdị ihe mgbochi ibuli elu nke e mere iji chịkwaa ohere ịbanye ụgbọala.
A na-eji njikwa anya ma ọ bụ ngwa ekwentị ma ọ bụ bọtịnụ push arụ ọrụ ya, enwere ike itinye ya na ihe mgbochi ebe a na-adọba ụgbọala, ọkụ okporo ụzọ, mkpu ọkụ, njirimara efere ikike, sistemụ igwefoto njikwa ụlọ.