This is not a bureaucratic restriction on use. What you may not know that vehicle registration in Australia includes compulsory third party (CTP) insurance. This represents a large proportion of the cost and is based on average risk over each full year. Concessional registration schemes operated by each State and Territory apply a discounted rate of CTP based on restricted use. For example, here in the ACT full annual registration can cost in the order of $A1,000+ compared to around $A125 for 60 day concessional use. For the uninitiated, CTP covers injury to all persons, including the driver, involved in road accidents. Vehicle and other property damage may be covered by optional comprehensive insurance. Finally, there is no barrier to full registration of a vehicle otherwise eligible for the concessional rate.