Northamptonshire Police has signed up more than 50 horse riders to help provide an extra set of eyes and ears for the force in rural parts of the county.
The volunteers, who are all aged over 18 years old, have agreed to try to help cut crime in rural areas by letting police know if they spot any suspicious activity.
Before joining the scheme, the riders undertook road safety training with the British Horse Society and have been given an equestrian jacket featuring the Police Logo to identify them as volunteers.
The volunteers will not be given patrol routes or asked to confront people they see breaking the law.
Instead, they will be asked to keep an eye out for problems as they ride along lanes, bridleways and paths in the countryside and report any issues they see to the police.
It is hoped their presence will also have an impact on motorists in rural areas who will be encouraged to slow down by the presence of uniformed riders.
The move to introduce volunteers on horseback mirrors similar projects launched by a number of other forces across the country.
In Hertfordshire, the force has four specials constables who ride horses and a number of volunteer riders.
In Norfolk, the force has a number of special constables who use their own horses for patrols and in Hampshire, the force has a number of volunteers on horseback.