Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 8 Jan 1998 | Gwynedd | 2 | 2 | Slight |
| Sun 18 Jan 1998 | Gwynedd | 2 | 6 | Fatal |
| Thu 22 Jan 1998 | Gwynedd | 2 | 1 | Slight |
| Wed 8 Apr 1998 | Gwynedd | 2 | 1 | Slight |
| Sun 17 May 1998 | Gwynedd | 3 | 4 | Fatal |
| Sat 6 Jun 1998 | Gwynedd | 2 | 2 | Serious |
| Mon 29 Jun 1998 | Gwynedd | 1 | 1 | Slight |
| Sun 23 Aug 1998 | Gwynedd | 3 | 1 | Slight |
| Fri 4 Sep 1998 | Gwynedd | 2 | 6 | Serious |
| Sun 6 Sep 1998 | Gwynedd | 1 | 3 | Slight |
| Tue 15 Sep 1998 | Gwynedd | 2 | 1 | Slight |
| Tue 15 Sep 1998 | Gwynedd | 1 | 1 | Slight |
| Tue 15 Sep 1998 | Gwynedd | 3 | 5 | Slight |
| Wed 16 Sep 1998 | Gwynedd | 2 | 4 | Serious |
| Tue 6 Oct 1998 | Gwynedd | 2 | 1 | Slight |
| Sun 18 Oct 1998 | Gwynedd | 1 | 1 | Serious |
| Thu 19 Nov 1998 | Gwynedd | 2 | 2 | Serious |