A SPECIAL constable who gives more of his free time to Dorset Police than any other volunteer said up to three drug drivers are arrested every day in the county.

SC Kier Dagnall works as a delivery driver and carer as well as offering up to 30 hours to the force each week.

He was involved in stopping young entrepreneur Mitchell Stuart when the 21-year-old was caught driving at 55 miles per hour in Lilliput Road near a school during the summer, and admitted feeling a "bit disappointed" with the defendant's 30-day driving ban.

In an interview with the Daily Echo, SC Dagnall said officers will never stop targeting those who commit one of the 'fatal five' on Dorset's roads.

"We pick areas to cover based, in part, on the number of reports we get from members of the public about driving issues," he said.

"We also have areas assigned to us in advance, and we publish these on the Dorset Road Safe Partnership website.

"Some of the biggest things we deal with are speeding and drug or drink driving. Although some people don't see speeding as a problem, it's absolutely unacceptable and one of the fatal five."

The officers also routinely deal with people who drive while using their mobile phones, as well as those who ignore school crossing patrols.

"You see all sorts of driving offences when you're out," SC Dagnall said.

"Sometimes, there'll be three drug drivers arrested in a single day."

SC Dagnall began volunteering for the force in 2010. He works with the roads policing team for the majority of the time.

"I really love it, I'd recommend it to anyone," he said.

According to police statistics, 98 per cent of collisions are caused by human error.

The 'fatal five' are driving at excess or inappropriate speeds, failing to wear a seatbelt, using a mobile phone, driving under the influence of drink or drugs and careless or inconsiderate driving.