Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sun 12 Jan 2003 | Cardiff | 1 | 3 | Slight |
| Mon 20 Jan 2003 | Cardiff | 1 | 2 | Slight |
| Tue 28 Jan 2003 | Cardiff | 2 | 1 | Slight |
| Sat 1 Feb 2003 | Cardiff | 2 | 1 | Slight |
| Sat 1 Feb 2003 | Cardiff | 2 | 2 | Slight |
| Mon 3 Feb 2003 | Cardiff | 2 | 1 | Serious |
| Mon 10 Feb 2003 | Cardiff | 2 | 1 | Slight |
| Sat 15 Feb 2003 | Cardiff | 2 | 1 | Slight |
| Sun 23 Feb 2003 | Cardiff | 2 | 2 | Slight |
| Sat 8 Mar 2003 | Cardiff | 2 | 1 | Slight |
| Tue 8 Apr 2003 | Cardiff | 2 | 3 | Slight |
| Sun 13 Apr 2003 | Cardiff | 2 | 2 | Slight |
| Fri 18 Apr 2003 | Cardiff | 1 | 6 | Slight |
| Sat 10 May 2003 | Cardiff | 1 | 1 | Slight |
| Wed 14 May 2003 | Cardiff | 2 | 1 | Slight |
| Fri 23 May 2003 | Cardiff | 2 | 1 | Slight |
| Mon 26 May 2003 | Cardiff | 2 | 2 | Slight |
| Mon 26 May 2003 | Cardiff | 3 | 1 | Slight |
| Thu 5 Jun 2003 | Cardiff | 2 | 2 | Serious |
| Sun 8 Jun 2003 | Cardiff | 2 | 1 | Slight |
| Sun 15 Jun 2003 | Cardiff | 1 | 4 | Slight |
| Tue 1 Jul 2003 | Cardiff | 2 | 1 | Slight |
| Sat 5 Jul 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 10 Jul 2003 | The Vale of Glamorgan | 1 | 1 | Slight |
| Sat 26 Jul 2003 | Cardiff | 2 | 1 | Slight |
| Mon 28 Jul 2003 | Cardiff | 2 | 2 | Slight |
| Sat 9 Aug 2003 | Cardiff | 1 | 2 | Slight |
| Thu 14 Aug 2003 | Cardiff | 6 | 6 | Slight |
| Tue 16 Sep 2003 | The Vale of Glamorgan | 3 | 2 | Slight |
| Mon 22 Sep 2003 | Cardiff | 2 | 1 | Slight |
| Fri 26 Sep 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 8 Oct 2003 | Cardiff | 2 | 1 | Slight |
| Sat 11 Oct 2003 | The Vale of Glamorgan | 1 | 1 | Serious |
| Mon 27 Oct 2003 | Cardiff | 3 | 1 | Slight |
| Tue 28 Oct 2003 | Cardiff | 2 | 2 | Slight |
| Tue 28 Oct 2003 | Cardiff | 2 | 1 | Slight |
| Wed 29 Oct 2003 | Cardiff | 6 | 4 | Slight |
| Wed 29 Oct 2003 | The Vale of Glamorgan | 2 | 2 | Slight |
| Fri 31 Oct 2003 | Cardiff | 2 | 1 | Slight |
| Fri 7 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Tue 11 Nov 2003 | Cardiff | 3 | 2 | Slight |
| Sat 15 Nov 2003 | Cardiff | 2 | 2 | Serious |
| Sat 15 Nov 2003 | Cardiff | 1 | 1 | Slight |
| Mon 17 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Fri 21 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Mon 24 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Thu 27 Nov 2003 | Cardiff | 2 | 2 | Slight |
| Fri 28 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Sun 30 Nov 2003 | Cardiff | 2 | 2 | Slight |
| Wed 3 Dec 2003 | Cardiff | 2 | 2 | Slight |
| Wed 3 Dec 2003 | Cardiff | 1 | 1 | Slight |
| Fri 5 Dec 2003 | Cardiff | 2 | 1 | Slight |
| Tue 9 Dec 2003 | Cardiff | 1 | 2 | Serious |
| Wed 10 Dec 2003 | Cardiff | 2 | 1 | Slight |
| Thu 11 Dec 2003 | Cardiff | 2 | 1 | Slight |
| Tue 23 Dec 2003 | Cardiff | 1 | 1 | Slight |