Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 15 Jan 2004 | Gwynedd | 2 | 2 | Slight |
| Sat 14 Feb 2004 | Gwynedd | 1 | 1 | Slight |
| Fri 27 Feb 2004 | Gwynedd | 2 | 1 | Slight |
| Wed 31 Mar 2004 | Gwynedd | 1 | 1 | Slight |
| Tue 20 Apr 2004 | Gwynedd | 1 | 1 | Slight |
| Wed 12 May 2004 | Gwynedd | 2 | 3 | Serious |
| Fri 21 May 2004 | Gwynedd | 2 | 1 | Slight |
| Sun 30 May 2004 | Gwynedd | 1 | 1 | Slight |
| Fri 4 Jun 2004 | Gwynedd | 2 | 1 | Slight |
| Wed 30 Jun 2004 | Gwynedd | 2 | 1 | Slight |
| Fri 9 Jul 2004 | Gwynedd | 3 | 2 | Serious |
| Sat 17 Jul 2004 | Gwynedd | 1 | 2 | Slight |
| Mon 26 Jul 2004 | Gwynedd | 1 | 1 | Slight |
| Fri 6 Aug 2004 | Gwynedd | 1 | 1 | Serious |
| Mon 9 Aug 2004 | Gwynedd | 5 | 7 | Fatal |
| Thu 12 Aug 2004 | Gwynedd | 1 | 1 | Slight |
| Thu 2 Sep 2004 | Gwynedd | 1 | 1 | Slight |
| Sat 4 Sep 2004 | Gwynedd | 2 | 1 | Slight |
| Sat 4 Sep 2004 | Gwynedd | 1 | 1 | Slight |
| Sat 11 Sep 2004 | Gwynedd | 1 | 1 | Slight |
| Sun 19 Sep 2004 | Gwynedd | 2 | 5 | Slight |
| Tue 5 Oct 2004 | Gwynedd | 1 | 1 | Slight |
| Mon 11 Oct 2004 | Gwynedd | 2 | 3 | Serious |
| Sun 24 Oct 2004 | Gwynedd | 1 | 1 | Slight |
| Tue 23 Nov 2004 | Gwynedd | 2 | 1 | Slight |
| Mon 6 Dec 2004 | Gwynedd | 1 | 1 | Slight |
| Sat 11 Dec 2004 | Gwynedd | 1 | 4 | Fatal |