Hearing a postie's motorcycle roar up your street could become a thing of the past after Australia Post revealed plans to add more electric tricycles to its delivery network.

The service announced the rollout of 500 three-wheeled electric vehicles on Tuesday, which will replace petrol-powered motorbikes and are expected to join its fleet before the Christmas rush.

The vehicles could also accelerate the delivery of online purchases, as each is equipped to carry an extra 120 parcels.

Australia Post's announcement is the latest in a series of electric upgrades for transport firms, coming one month after FedEx revealed plans to add 55 electric vans and trucks to its network, and following similar investments by ANC Delivers, Team Global Express and Linfox.

The latest electric vehicles to h

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