Road-Registered Mobile Plant Insurance

Road-registered mobile plant — crane trucks, truck-mounted cranes, elevated work platforms (EWPs), concrete pumps, drill rigs, and other specialist equipment that moves between job sites under its own power — occupies a complex insurance territory that sits between motor vehicle cover and commercial plant insurance. Getting the boundary between these two covers right is the defining challenge of insuring this asset class, and it is an area where underinsurance is common.

The Two-Cover Problem

When a crane truck is travelling on a state highway between job sites, it is a heavy motor vehicle and the motor vehicle policy responds. When the same vehicle is on-site with outriggers deployed and the crane in operation, it is plant equipment and the motor vehicle policy typically does not respond for lifting incidents. The on-site lifting phase is where the most significant incidents occur — and it requires dedicated plant all-risks cover, not motor vehicle insurance.

Many mobile plant operators do not realise this distinction exists in their policy until they make a claim. A crane boom failure during a lift, an outrigger collapse causing property damage, or a suspended load incident will all be assessed by the motor vehicle insurer as operational plant incidents falling outside the vehicle policy's scope. Without a plant all-risks policy in place, the operator has no cover for what is statistically the most likely high-value incident.

Lifting Operations — the Highest Liability Exposure

Public liability arising from lifting operations is the largest potential exposure for crane truck operators. A failed lift that damages a neighbouring building, drops a load on a vehicle below, or — in the worst case — injures a worker or bystander can generate multi-million-dollar liability claims. The [Approved Code of Practice for Cranes in New Zealand](https://worksafe.govt.nz) sets out mandatory competency requirements for crane operators and lift supervisors. [WorkSafe NZ](https://worksafe.govt.nz) takes crane safety extremely seriously: a fatality or serious injury during a lift will trigger a full investigation, and operators without documented lift plans and qualified operators face both prosecution and coverage disputes.

Public liability limits for crane truck operations should be set at a minimum of $5 million per occurrence. Operations in urban environments, near airports, or involving elevated work platforms should consider $10–$20 million, given the potential for catastrophic third-party incidents.

Overhead Line Contact

Contact with overhead power lines is one of the most frequent and serious incidents in the crane and EWP sector. [Electricity Networks Aotearoa](https://www.electricity.org.nz) and [WorkSafe NZ](https://worksafe.govt.nz) both publish guidance on safe working distances from overhead lines. Despite this, overhead line contact incidents occur regularly in NZ and can involve serious injury, power network damage, and fire. Insurance programmes for crane and EWP operators should include specific overhead line contact cover for both vehicle/equipment damage and third-party liability arising from power outages or line damage.

High-Value Assets — Agreed Value is Essential

Late-model truck-mounted cranes, all-terrain cranes, and large EWP units represent asset values of $300,000 to $2,500,000. Replacement lead times for specialist configurations can be 12–24 months from order. Market value settlements at claim time will not reflect replacement cost for unique or specialist equipment. Agreed value cover, with values reviewed at every renewal and benchmarked against current replacement costs, is the only correct approach for specialist mobile plant.

Connect with a specialist commercial plant and motor broker who understands the boundary between vehicle and plant cover. Failing to structure both policies correctly leaves you exposed in exactly the operating phase where your biggest incidents happen.