Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 8 Jan 1999 | Gwynedd | 1 | 1 | Fatal |
| Sun 27 Jun 1999 | Gwynedd | 2 | 1 | Slight |
| Tue 6 Jul 1999 | Gwynedd | 2 | 1 | Slight |
| Wed 18 Aug 1999 | Gwynedd | 2 | 1 | Slight |
| Sun 22 Aug 1999 | Gwynedd | 3 | 1 | Slight |
| Tue 31 Aug 1999 | Gwynedd | 2 | 1 | Slight |
| Sat 18 Sep 1999 | Gwynedd | 2 | 1 | Slight |
| Wed 13 Oct 1999 | Gwynedd | 2 | 1 | Slight |
| Wed 3 Nov 1999 | Gwynedd | 2 | 3 | Slight |
| Thu 11 Nov 1999 | Gwynedd | 2 | 1 | Slight |
| Sat 4 Dec 1999 | Gwynedd | 1 | 1 | Slight |
| Mon 6 Dec 1999 | Gwynedd | 2 | 2 | Slight |