Paul Smith's brother, David, was just 19 when he was involved in a fatal accident near Huntly.
Mr Smith has now presented £500 to the force's road safety unit which will help officers in their education work.
"My partner Fiona Irvine and I wanted to raise some money to help road safety work in this area as it was 10 years since I lost my brother David in a road crash near Huntly," he said. "We held a stovie disco at the Red Star at Skene and raised £1,000 in total."
Of that total £500 was presented to Grampian Police road safety unit, with the remainder to be shared between local schools which are carrying out road safety initiatives and a bereavement support group in Aberdeen.
Mr Smith, who owns a business in the Skene area, held the fundraising event on March 27.
Sergeant Alan Brown, of the road safety unit, said: "To be given such a generous amount of money is very welcome.
"Without the support of the public our task becomes extremely difficult. In this case, the fundraising is particularly poignant as Paul has suffered the loss of a brother in a crash. I have spoken at length with Paul and we have agreed that the donation will fund an additional projector to link with a laptop recently sponsored by Oceaneering.
"This will enable the unit to reach a wider audience, presenting road safety advice and hopefully reducing the heartache felt by many following a fatality."
The unit regularly gives road safety talks to schools, colleges, local businesses and organisations. Some of these are in partnership with other organisations including Grampian Fire and Rescue Service.