Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 2 Jan 2003 | The Vale of Glamorgan | 3 | 2 | Slight |
| Wed 5 Feb 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Fri 28 Mar 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 16 Apr 2003 | The Vale of Glamorgan | 3 | 5 | Slight |
| Mon 12 May 2003 | The Vale of Glamorgan | 2 | 2 | Slight |
| Sun 15 Jun 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 10 Jul 2003 | The Vale of Glamorgan | 1 | 1 | Slight |
| Fri 25 Jul 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 7 Aug 2003 | The Vale of Glamorgan | 4 | 2 | Slight |
| Sun 17 Aug 2003 | The Vale of Glamorgan | 4 | 1 | Slight |
| Wed 17 Sep 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 24 Sep 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Mon 29 Sep 2003 | The Vale of Glamorgan | 2 | 2 | Slight |
| Thu 16 Oct 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 16 Oct 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 23 Oct 2003 | The Vale of Glamorgan | 1 | 1 | Serious |
| Tue 18 Nov 2003 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 19 Nov 2003 | Cardiff | 2 | 1 | Slight |
| Sat 29 Nov 2003 | The Vale of Glamorgan | 3 | 1 | Slight |
| Wed 31 Dec 2003 | The Vale of Glamorgan | 2 | 3 | Slight |