The Emergency Ambulance Service is locating crews at three different sites in response to coronavirus.
One ambulance will be stationed at Les Gigands, near the Oatlands complex, another will be based at Les Cotils, while remaining crews will respond from the ambulance station in Rohais.
The changes will help St John increase resilience and reduce risk during the pandemic and allows the organisation to continue to provide an efficient and fully functional ambulance service for the island.
Chief Ambulance Officer Mark Mapp said: “Splitting the crews significantly reduces the likelihood of an entire team having to go into isolation if one of them becomes unwell with coronavirus symptoms.
“Although at the present time crews are spending most of their shift on the road we want to reduce the time whole teams are together in one place.”
Mr Mapp added: “I would like to thank the management of Les Cotils and Les Gigand for their hospitality in accommodating our ambulance crews. I’d also like to acknowledge the flexibility of our staff for adapting to changing circumstances.”
Guernsey Fire & Rescue Service announced similar measures last week.

Guernsey's emergency services assess the impact of Storm Goretti
Aurigny gets monopoly on Guernsey's lifeline airlinks as Loganair is denied permits
Storm causes gable end to collapse on Guernsey property
Major clean up begins after Storm Goretti
Sanctioned Russian tanker sailing north of Channel Islands
CI Airports to close early as Storm Goretti approaches
Storm Goretti prompts stay-at-home warning in the Channel Islands
50,000 cruise passengers heading for Guernsey in 2026