Covert motorbikes in Isle of Man TT safety campaign
Covert motorbikes will be used by police in a public road safety campaign during the 2014 Isle of Man TT races.
The scheme was announced at the Sea Terminal in Douglas, ahead of June's festival.
Police will use two covert bikes on regular patrols "to make it easier for officers to be in the right place at the right time".
Alan Thompson, of the roads policing unit, said: "It is all about thinking in the same way as a biker would."
He added: "Sadly, there were five fatalities in 2012 but, for the first time since 2006, no-one was killed on open roads last year - we want that trend to continue.
"With the covert motorcycles, bikers look in their rear mirror and they don't know if the police are behind them or not- this encourages people to police themselves to a large extent."
Safety posters will be put up at ports in both the UK and Ireland, as well as around the TT course and campsites.
As well as an improved accident rate, the 2013 TT festival saw a 62% reduction in the amount of speeding prosecutions.
The total number of accidents last year also fell from 89 in 2012 to 84.