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