Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 9 Jan 2003 | Cardiff | 2 | 2 | Slight |
| Wed 22 Jan 2003 | Cardiff | 2 | 1 | Slight |
| Fri 14 Feb 2003 | Cardiff | 2 | 1 | Slight |
| Tue 18 Feb 2003 | The Vale of Glamorgan | 1 | 1 | Slight |
| Thu 20 Feb 2003 | Cardiff | 1 | 1 | Slight |
| Thu 13 Mar 2003 | Cardiff | 1 | 1 | Slight |
| Wed 19 Mar 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 20 Mar 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Fri 28 Mar 2003 | Cardiff | 2 | 2 | Serious |
| Fri 18 Apr 2003 | Cardiff | 1 | 1 | Slight |
| Tue 29 Apr 2003 | Cardiff | 4 | 2 | Slight |
| Thu 1 May 2003 | Cardiff | 2 | 2 | Slight |
| Mon 12 May 2003 | Cardiff | 1 | 1 | Slight |
| Sun 25 May 2003 | Cardiff | 2 | 4 | Slight |
| Sat 31 May 2003 | Cardiff | 2 | 1 | Slight |
| Thu 12 Jun 2003 | Cardiff | 1 | 1 | Slight |
| Wed 18 Jun 2003 | Cardiff | 1 | 1 | Slight |
| Tue 24 Jun 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 26 Jun 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Sun 6 Jul 2003 | Cardiff | 2 | 1 | Slight |
| Fri 18 Jul 2003 | Cardiff | 2 | 1 | Slight |
| Sat 26 Jul 2003 | South Oxfordshire | 2 | 2 | Slight |
| Thu 11 Sep 2003 | Cardiff | 2 | 1 | Slight |
| Fri 19 Sep 2003 | Cardiff | 4 | 1 | Serious |
| Fri 19 Sep 2003 | Cardiff | 2 | 1 | Slight |
| Tue 23 Sep 2003 | Cardiff | 1 | 1 | Slight |
| Tue 23 Sep 2003 | The Vale of Glamorgan | 2 | 2 | Slight |
| Sat 4 Oct 2003 | Cardiff | 1 | 1 | Slight |
| Wed 8 Oct 2003 | Cardiff | 2 | 3 | Slight |
| Mon 13 Oct 2003 | Cardiff | 2 | 1 | Slight |
| Mon 3 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Tue 4 Nov 2003 | Cardiff | 2 | 3 | Slight |
| Sun 23 Nov 2003 | Cardiff | 2 | 2 | Slight |
| Fri 5 Dec 2003 | Cardiff | 2 | 2 | Slight |
| Sat 20 Dec 2003 | Cardiff | 2 | 1 | Slight |
| Wed 24 Dec 2003 | Cardiff | 2 | 1 | Slight |
| Wed 24 Dec 2003 | Cardiff | 2 | 1 | Slight |