A cycle response unit has been set up by the Devon branch of St John Ambulance to reach isolated incidents.
The cycling team will respond to incidents at locations where casualties would be hard to reach by ambulance.
The bikes will also be used at events like the Devon County Show to transport medical care through crowds.
Medical equipment, including minor treatment kits, has been fitted to the bikes.
Cycling co-ordinator Ollie Mulcock said: "At Devon County Show it was very hard to negotiate the crowds of people on foot and carrying medical equipment.
"It made me realise then that cycle responders would be really useful as it is much easier to negotiate a crowd on a bicycle.
"Saving minutes can mean saving lives and we want to make sure that everyone who needs first aid can get it as quickly as possible."