Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 8 Jan 1999 | Cardiff | 2 | 3 | Serious |
| Fri 5 Feb 1999 | Cardiff | 2 | 2 | Slight |
| Mon 8 Feb 1999 | Cardiff | 2 | 1 | Slight |
| Tue 9 Feb 1999 | Cardiff | 2 | 2 | Slight |
| Fri 26 Feb 1999 | Cardiff | 2 | 1 | Slight |
| Mon 15 Mar 1999 | Cardiff | 3 | 1 | Slight |
| Thu 8 Apr 1999 | Cardiff | 2 | 1 | Slight |
| Tue 13 Apr 1999 | Cardiff | 2 | 1 | Slight |
| Sat 22 May 1999 | Cardiff | 2 | 1 | Slight |
| Tue 8 Jun 1999 | Cardiff | 1 | 1 | Slight |
| Mon 12 Jul 1999 | Cardiff | 2 | 1 | Slight |
| Sun 18 Jul 1999 | Cardiff | 1 | 2 | Slight |
| Wed 28 Jul 1999 | Cardiff | 1 | 1 | Slight |
| Tue 3 Aug 1999 | Cardiff | 2 | 1 | Slight |
| Wed 25 Aug 1999 | Cardiff | 1 | 2 | Slight |
| Mon 13 Sep 1999 | Cardiff | 2 | 2 | Fatal |
| Thu 23 Sep 1999 | Cardiff | 2 | 1 | Slight |
| Thu 7 Oct 1999 | Cardiff | 2 | 1 | Slight |
| Sat 9 Oct 1999 | Cardiff | 1 | 2 | Serious |
| Sun 24 Oct 1999 | Cardiff | 1 | 2 | Serious |
| Thu 4 Nov 1999 | Cardiff | 2 | 1 | Slight |
| Sat 4 Dec 1999 | Cardiff | 3 | 3 | Slight |
| Fri 10 Dec 1999 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 22 Dec 1999 | Cardiff | 2 | 1 | Slight |