The parish’s Chef de Police, Clive Murphy, has warned riders, as well as cyclists, that they could be breaking the law if they use their phone while on the road.
His warning, which has been published in St Ouen’s quarterly magazine, Le Gris Ventre, has come after the parish received a spike in complaints.
Mr Murphy said: ‘Most road users are aware that using a mobile phone while driving a car is a serious offence.
'However, we are also receiving complaints about other roads users, namely cyclists and horse riders, using a mobile device while in motion.
'It is a serious offence not to be in control of your cycle or horse, with similar penalties for cyclists as motorists.
‘All complaints received by us about horse riders, cyclists and car drivers will be followed up with equal vigour.’
Article 50 of the Road Traffic (Jersey) Law 1956 makes it illegal for anyone to use their mobile phone driving a ‘vehicle’, when that vehicle is in motion. The law does not specifically refer to horses or cyclists.
However, a horse rider or cyclist can be prosecuted for dangerous or careless driving.
It is also illegal to ride a horse or a bicycle while over the drink-drive limit. However, the law states that driving an electric wheelchair while under the influence is not a crime.