Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 3 Jan 2000 | Ceredigion | 2 | 1 | Fatal |
| Tue 4 Jan 2000 | Gwynedd | 1 | 1 | Slight |
| Fri 7 Jan 2000 | Gwynedd | 2 | 1 | Slight |
| Tue 11 Jan 2000 | Gwynedd | 3 | 3 | Slight |
| Tue 11 Jan 2000 | Gwynedd | 2 | 2 | Slight |
| Sat 15 Jan 2000 | Gwynedd | 2 | 1 | Slight |
| Sat 22 Jan 2000 | Ceredigion | 3 | 1 | Slight |
| Tue 1 Feb 2000 | Pembrokeshire | 1 | 1 | Slight |
| Wed 2 Feb 2000 | Ceredigion | 1 | 1 | Slight |
| Sun 6 Feb 2000 | Ceredigion | 1 | 1 | Slight |
| Sun 13 Feb 2000 | Pembrokeshire | 1 | 1 | Fatal |
| Sun 13 Feb 2000 | Pembrokeshire | 1 | 1 | Serious |
| Tue 15 Feb 2000 | Ceredigion | 1 | 1 | Slight |
| Sat 19 Feb 2000 | Ceredigion | 1 | 3 | Slight |
| Thu 24 Feb 2000 | Gwynedd | 1 | 2 | Serious |
| Sat 26 Feb 2000 | Ceredigion | 2 | 1 | Slight |
| Mon 28 Feb 2000 | Pembrokeshire | 1 | 1 | Slight |
| Fri 3 Mar 2000 | Pembrokeshire | 2 | 2 | Serious |
| Fri 10 Mar 2000 | Gwynedd | 3 | 4 | Slight |
| Mon 13 Mar 2000 | Gwynedd | 1 | 1 | Slight |
| Sat 18 Mar 2000 | Gwynedd | 1 | 1 | Slight |
| Sat 18 Mar 2000 | Gwynedd | 1 | 1 | Slight |
| Sat 18 Mar 2000 | Gwynedd | 2 | 3 | Serious |
| Sat 18 Mar 2000 | Ceredigion | 2 | 2 | Slight |
| Sun 19 Mar 2000 | Ceredigion | 1 | 1 | Slight |
| Fri 24 Mar 2000 | Pembrokeshire | 1 | 1 | Slight |
| Sat 25 Mar 2000 | Ceredigion | 2 | 1 | Slight |
| Sun 26 Mar 2000 | Ceredigion | 3 | 2 | Slight |
| Mon 27 Mar 2000 | Ceredigion | 1 | 1 | Slight |
| Tue 28 Mar 2000 | Gwynedd | 2 | 1 | Slight |
| Sat 1 Apr 2000 | Pembrokeshire | 1 | 2 | Slight |
| Mon 3 Apr 2000 | Ceredigion | 2 | 2 | Slight |
| Wed 5 Apr 2000 | Ceredigion | 1 | 1 | Serious |
| Fri 14 Apr 2000 | Gwynedd | 2 | 1 | Slight |
| Mon 17 Apr 2000 | Ceredigion | 2 | 1 | Slight |
| Mon 17 Apr 2000 | Pembrokeshire | 2 | 1 | Slight |
| Mon 17 Apr 2000 | Ceredigion | 2 | 1 | Serious |
| Tue 18 Apr 2000 | Ceredigion | 2 | 1 | Slight |
| Wed 19 Apr 2000 | Gwynedd | 2 | 2 | Slight |
| Sun 23 Apr 2000 | Gwynedd | 2 | 10 | Serious |
| Tue 25 Apr 2000 | Gwynedd | 2 | 1 | Slight |
| Tue 25 Apr 2000 | Ceredigion | 2 | 2 | Slight |
| Wed 26 Apr 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 28 Apr 2000 | Ceredigion | 2 | 1 | Serious |
| Sun 30 Apr 2000 | Ceredigion | 2 | 2 | Serious |
| Tue 2 May 2000 | Pembrokeshire | 2 | 1 | Slight |
| Tue 2 May 2000 | Ceredigion | 2 | 2 | Slight |
| Mon 8 May 2000 | Ceredigion | 1 | 1 | Slight |
| Wed 10 May 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 12 May 2000 | Ceredigion | 2 | 1 | Serious |
| Fri 12 May 2000 | Ceredigion | 2 | 1 | Slight |
| Sun 14 May 2000 | Gwynedd | 1 | 1 | Slight |
| Fri 19 May 2000 | Ceredigion | 2 | 2 | Serious |
| Sun 21 May 2000 | Ceredigion | 2 | 3 | Serious |
| Mon 22 May 2000 | Ceredigion | 1 | 1 | Slight |
| Tue 23 May 2000 | Gwynedd | 3 | 2 | Slight |
| Thu 25 May 2000 | Ceredigion | 2 | 2 | Slight |
| Fri 26 May 2000 | Gwynedd | 2 | 1 | Slight |
| Fri 26 May 2000 | Ceredigion | 2 | 1 | Slight |
| Sat 27 May 2000 | Ceredigion | 3 | 1 | Slight |
| Sun 28 May 2000 | Pembrokeshire | 2 | 1 | Serious |
| Mon 29 May 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 2 Jun 2000 | Gwynedd | 2 | 1 | Slight |
| Sat 3 Jun 2000 | Ceredigion | 1 | 1 | Serious |
| Fri 9 Jun 2000 | Pembrokeshire | 2 | 2 | Slight |
| Sat 10 Jun 2000 | Pembrokeshire | 1 | 2 | Slight |
| Fri 16 Jun 2000 | Ceredigion | 3 | 1 | Slight |
| Sat 17 Jun 2000 | Ceredigion | 2 | 1 | Slight |
| Tue 20 Jun 2000 | Ceredigion | 2 | 1 | Slight |
| Tue 20 Jun 2000 | Ceredigion | 2 | 1 | Serious |
| Thu 22 Jun 2000 | Gwynedd | 2 | 2 | Slight |
| Sat 24 Jun 2000 | Pembrokeshire | 2 | 1 | Slight |
| Sat 24 Jun 2000 | Ceredigion | 3 | 1 | Slight |
| Sun 25 Jun 2000 | Pembrokeshire | 2 | 2 | Slight |
| Wed 28 Jun 2000 | Gwynedd | 2 | 1 | Slight |
| Mon 3 Jul 2000 | Pembrokeshire | 3 | 3 | Slight |
| Wed 5 Jul 2000 | Gwynedd | 2 | 1 | Slight |
| Wed 5 Jul 2000 | Gwynedd | 3 | 1 | Serious |
| Thu 6 Jul 2000 | Ceredigion | 3 | 3 | Slight |
| Fri 7 Jul 2000 | Ceredigion | 1 | 1 | Serious |
| Fri 7 Jul 2000 | Ceredigion | 3 | 1 | Slight |
| Fri 7 Jul 2000 | Ceredigion | 3 | 2 | Slight |
| Tue 11 Jul 2000 | Gwynedd | 4 | 2 | Slight |
| Thu 13 Jul 2000 | Ceredigion | 2 | 2 | Slight |
| Thu 13 Jul 2000 | Gwynedd | 2 | 1 | Slight |
| Thu 13 Jul 2000 | Gwynedd | 3 | 2 | Slight |
| Sun 16 Jul 2000 | Pembrokeshire | 1 | 1 | Slight |
| Wed 19 Jul 2000 | Ceredigion | 3 | 1 | Slight |
| Thu 20 Jul 2000 | Ceredigion | 3 | 3 | Serious |
| Sun 23 Jul 2000 | Gwynedd | 2 | 1 | Slight |
| Mon 24 Jul 2000 | Gwynedd | 4 | 4 | Slight |
| Sat 29 Jul 2000 | Ceredigion | 1 | 1 | Slight |
| Sun 30 Jul 2000 | Gwynedd | 1 | 1 | Slight |
| Mon 31 Jul 2000 | Pembrokeshire | 1 | 1 | Slight |
| Mon 31 Jul 2000 | Gwynedd | 1 | 1 | Slight |
| Thu 3 Aug 2000 | Ceredigion | 3 | 1 | Slight |
| Sat 5 Aug 2000 | Gwynedd | 3 | 4 | Slight |
| Sun 6 Aug 2000 | Pembrokeshire | 2 | 8 | Serious |
| Tue 8 Aug 2000 | Pembrokeshire | 2 | 1 | Slight |
| Wed 9 Aug 2000 | Ceredigion | 3 | 1 | Serious |
| Wed 9 Aug 2000 | Gwynedd | 3 | 8 | Slight |
| Fri 11 Aug 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 11 Aug 2000 | Ceredigion | 2 | 2 | Slight |
| Sat 12 Aug 2000 | Gwynedd | 2 | 2 | Slight |
| Tue 15 Aug 2000 | Powys | 1 | 1 | Slight |
| Wed 16 Aug 2000 | Gwynedd | 3 | 4 | Slight |
| Thu 17 Aug 2000 | Gwynedd | 2 | 2 | Slight |
| Sat 19 Aug 2000 | Gwynedd | 2 | 1 | Slight |
| Sat 19 Aug 2000 | Pembrokeshire | 2 | 1 | Slight |
| Sun 20 Aug 2000 | Ceredigion | 2 | 2 | Slight |
| Wed 23 Aug 2000 | Pembrokeshire | 2 | 3 | Slight |
| Sat 26 Aug 2000 | Pembrokeshire | 1 | 1 | Serious |
| Mon 28 Aug 2000 | Ceredigion | 2 | 1 | Slight |
| Mon 28 Aug 2000 | Gwynedd | 3 | 1 | Slight |
| Mon 28 Aug 2000 | Ceredigion | 2 | 3 | Slight |
| Mon 28 Aug 2000 | Ceredigion | 2 | 2 | Slight |
| Thu 31 Aug 2000 | Gwynedd | 2 | 1 | Slight |
| Thu 31 Aug 2000 | Ceredigion | 4 | 2 | Slight |
| Mon 4 Sep 2000 | Ceredigion | 1 | 1 | Slight |
| Tue 5 Sep 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 8 Sep 2000 | Pembrokeshire | 1 | 1 | Serious |
| Sat 9 Sep 2000 | Ceredigion | 2 | 1 | Serious |
| Fri 15 Sep 2000 | Pembrokeshire | 2 | 1 | Slight |
| Fri 22 Sep 2000 | Ceredigion | 2 | 1 | Slight |
| Sat 23 Sep 2000 | Powys | 1 | 1 | Serious |
| Mon 25 Sep 2000 | Pembrokeshire | 1 | 1 | Slight |
| Wed 27 Sep 2000 | Pembrokeshire | 3 | 3 | Serious |
| Wed 27 Sep 2000 | Gwynedd | 3 | 1 | Slight |
| Thu 28 Sep 2000 | Gwynedd | 2 | 1 | Slight |
| Thu 28 Sep 2000 | Ceredigion | 4 | 1 | Slight |
| Sun 1 Oct 2000 | Gwynedd | 1 | 1 | Slight |
| Sun 1 Oct 2000 | Gwynedd | 2 | 1 | Slight |
| Mon 2 Oct 2000 | Ceredigion | 1 | 1 | Serious |
| Tue 3 Oct 2000 | Ceredigion | 2 | 1 | Slight |
| Wed 4 Oct 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 5 Oct 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 6 Oct 2000 | Ceredigion | 1 | 1 | Slight |
| Mon 9 Oct 2000 | Gwynedd | 2 | 1 | Slight |
| Mon 9 Oct 2000 | Gwynedd | 1 | 1 | Slight |
| Tue 10 Oct 2000 | Pembrokeshire | 3 | 1 | Slight |
| Tue 10 Oct 2000 | Ceredigion | 1 | 5 | Serious |
| Wed 11 Oct 2000 | Pembrokeshire | 2 | 1 | Slight |
| Thu 12 Oct 2000 | Ceredigion | 2 | 2 | Slight |
| Fri 13 Oct 2000 | Ceredigion | 1 | 1 | Slight |
| Sat 14 Oct 2000 | Gwynedd | 2 | 3 | Slight |
| Mon 16 Oct 2000 | Ceredigion | 2 | 1 | Slight |
| Tue 17 Oct 2000 | Pembrokeshire | 3 | 1 | Slight |
| Mon 23 Oct 2000 | Gwynedd | 2 | 1 | Slight |
| Tue 24 Oct 2000 | Ceredigion | 1 | 1 | Slight |
| Wed 25 Oct 2000 | Gwynedd | 2 | 1 | Slight |
| Thu 26 Oct 2000 | Gwynedd | 1 | 1 | Serious |
| Sat 28 Oct 2000 | Gwynedd | 1 | 1 | Slight |
| Sun 29 Oct 2000 | Pembrokeshire | 1 | 1 | Slight |
| Sun 29 Oct 2000 | Ceredigion | 2 | 2 | Slight |
| Wed 1 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Wed 1 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 2 Nov 2000 | Pembrokeshire | 1 | 1 | Slight |
| Fri 3 Nov 2000 | Ceredigion | 3 | 2 | Slight |
| Fri 3 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Sun 5 Nov 2000 | Gwynedd | 2 | 6 | Slight |
| Mon 6 Nov 2000 | Ceredigion | 2 | 2 | Slight |
| Wed 8 Nov 2000 | Pembrokeshire | 2 | 1 | Slight |
| Thu 9 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 9 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Fri 10 Nov 2000 | Pembrokeshire | 1 | 1 | Slight |
| Sat 11 Nov 2000 | Pembrokeshire | 3 | 1 | Slight |
| Fri 17 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Sun 19 Nov 2000 | Pembrokeshire | 2 | 1 | Serious |
| Tue 21 Nov 2000 | Ceredigion | 2 | 1 | Serious |
| Wed 22 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 23 Nov 2000 | Gwynedd | 2 | 1 | Slight |
| Thu 23 Nov 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 30 Nov 2000 | Ceredigion | 2 | 5 | Slight |
| Fri 1 Dec 2000 | Gwynedd | 2 | 1 | Slight |
| Sat 2 Dec 2000 | Ceredigion | 2 | 2 | Slight |
| Sat 2 Dec 2000 | Pembrokeshire | 2 | 1 | Slight |
| Mon 4 Dec 2000 | Ceredigion | 3 | 5 | Slight |
| Wed 6 Dec 2000 | Ceredigion | 2 | 1 | Slight |
| Thu 7 Dec 2000 | Gwynedd | 3 | 1 | Slight |
| Fri 8 Dec 2000 | Gwynedd | 2 | 2 | Slight |
| Fri 15 Dec 2000 | Gwynedd | 1 | 1 | Slight |
| Fri 15 Dec 2000 | Pembrokeshire | 3 | 1 | Slight |
| Fri 15 Dec 2000 | Ceredigion | 2 | 2 | Slight |
| Sat 16 Dec 2000 | Pembrokeshire | 2 | 3 | Serious |
| Mon 18 Dec 2000 | Ceredigion | 2 | 2 | Slight |
| Tue 19 Dec 2000 | Ceredigion | 2 | 2 | Slight |
| Fri 22 Dec 2000 | Gwynedd | 4 | 3 | Slight |
| Fri 22 Dec 2000 | Ceredigion | 3 | 1 | Slight |