The number of collisions on open roads during the Isle of Man TT Festival was down by 15 per cent on 2012, police statistics show.
For the first time since 2006, there were no fatalities. It compares with five last year.
But Inspector Derek Flint said that despite this, from the 77 collisions, some of the casualties had received ‘life changing injuries’.
Overall, he said the 2013 TT roads policing operation had been a ‘remarkable success’.
‘Collisions overall were down some 15 per cent on the previous year, and we have had no fatalities on the open roads compared to five in 2012,’ he said.
‘With such tremendous weather, we were steeled for much higher numbers of incidents, but our overall strategy seems to have paid off.
‘The last time this was achieved was 2006.’
Mr Flint said that there would be ‘further analysis’ over the next couple of weeks, but that early indications were that the ‘Respect Our Roads’ theme, led by the Department of Infrastructure, was well received by both visitors and residents.
He said the constabulary’s highly visible presence helped by the well publicised covert car and bike campaign, had also been reported in feedback as being ‘highly influential in changing attitudes and behaviours’.
This year, the police increased its use of social media to spread the message before visitors had even reached the island.
A picture of one of the unmarked bikes road signs, posted on social media on May 22 was seen by over 52,000 people on Facebook alone.
It was also shared over 350 times, many of those being off-island.
Mr Flint said: ‘We also need to thank the local media, whose support has ensured that the message has been continually reinforced throughout the festival.
‘A further consequence is that speeding summonses are massively down from 2012, despite no less attention being paid to enforcement.’
He added: ‘We do need to remember however, that in amongst those casualty figures, there are still some who have received life-changing injuries.
‘This brings into sharp focus the need to resist any laurel-resting, and make sure our efforts are equally as effective for the August Manx Grand Prix and Classic TT Festival.’
In 2012, there was a total of 91 collisions on the open roads.