AT work, PC Jonathan Poole is the model of care and attention behind the wheel of his vehicle.
But once he gets out of his uniform, there is nothing the bike-mad road racer loves more than to pull on his leathers, hop on his ride and tear around at hair-raising speeds.
Police driving instructor Jonathan, 34, who lives at Nantwich, admits he wouldn't want his students to pick up any of the driving habits on display when he is competing in the 400cc Road Race Championship for the Prestatyn-based New Era club.
But then again, he also says he wouldn't advise anyone on the real road to drive at the speeds he is used to racing at, with all his biking exploits confined to purpose-built tracks, despite the 'road race' tag.
And having been a member of Cheshire Police's Traffic division for eight-and-a-half years before he recently became an instructor, Jonathan should know.
He said: 'I have attended numerous fatals over the years and it is true that a lot of them have been bikes.
'But I try to take a philosophical view because, in most accidents I've come across, there seems to be a pattern of events beforehand which have made the accident almost inevitable.
'On the track there is a lot more control and, if you crash, there is help on hand within seconds.'
Jonathan, who has ridden bikes for 18 years and has been racing for seven, is well aware that his is a dangerous past-time, and also admits that it is not something he will be encouraging his nine-month-old son Joseph to take up in later life.
But with physiotherapist wife Rebecca treating him after each of his 11 accidents so far, one for each year of their marriage, Jonathan is happy that he is in good hands when it does occasionally go wrong.
He said: 'Touch wood, I've been lucky so far and never broken anything. Rebecca has always treated me after a fall and she also sponsors me through her business, the Nantwich Physiotherapy Clinic.
'She's always very supportive, coming to all the meets. I think she's happier now I'm more established and we can afford a caravan. In the early days, we used to camp and it would get freezing!'
Jonathan has had his best season so far racing at the New Era Elite Super-club, recording a couple of wins and one or two third and fourth places.
He said: 'Racing with a big club, it takes a while to make an impression on the national circuit. The Superclub is the really fast boys and now I'm off shifts with the traffic division, I can get to a few more meetings.'