Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 9 Jan 1998 | Cardiff | 2 | 3 | Slight |
| Wed 28 Jan 1998 | Cardiff | 3 | 1 | Slight |
| Wed 4 Feb 1998 | Cardiff | 3 | 1 | Slight |
| Wed 4 Feb 1998 | Cardiff | 5 | 2 | Slight |
| Wed 11 Feb 1998 | Cardiff | 2 | 1 | Slight |
| Sat 21 Feb 1998 | Cardiff | 2 | 1 | Serious |
| Fri 27 Feb 1998 | Cardiff | 1 | 1 | Serious |
| Sat 7 Mar 1998 | Cardiff | 2 | 1 | Slight |
| Fri 13 Mar 1998 | The Vale of Glamorgan | 2 | 2 | Slight |
| Sun 22 Mar 1998 | Cardiff | 2 | 1 | Slight |
| Wed 25 Mar 1998 | Cardiff | 1 | 1 | Slight |
| Wed 25 Mar 1998 | Cardiff | 3 | 1 | Slight |
| Wed 25 Mar 1998 | Cardiff | 2 | 1 | Slight |
| Wed 25 Mar 1998 | Cardiff | 1 | 1 | Slight |
| Thu 26 Mar 1998 | Cardiff | 1 | 1 | Slight |
| Sun 19 Apr 1998 | Cardiff | 1 | 1 | Serious |
| Thu 30 Apr 1998 | Cardiff | 1 | 1 | Serious |
| Sun 3 May 1998 | Cardiff | 1 | 1 | Slight |
| Wed 27 May 1998 | Cardiff | 2 | 1 | Slight |
| Sat 6 Jun 1998 | Cardiff | 1 | 3 | Fatal |
| Mon 8 Jun 1998 | Cardiff | 2 | 1 | Slight |
| Mon 15 Jun 1998 | Cardiff | 2 | 1 | Slight |
| Tue 16 Jun 1998 | Cardiff | 2 | 1 | Slight |
| Fri 21 Aug 1998 | Cardiff | 1 | 1 | Slight |
| Wed 26 Aug 1998 | Cardiff | 2 | 1 | Slight |
| Fri 11 Sep 1998 | Cardiff | 2 | 1 | Slight |
| Sat 26 Sep 1998 | Cardiff | 2 | 1 | Slight |
| Fri 9 Oct 1998 | Cardiff | 2 | 1 | Slight |
| Thu 15 Oct 1998 | Cardiff | 1 | 2 | Slight |
| Tue 20 Oct 1998 | Cardiff | 2 | 1 | Slight |
| Fri 23 Oct 1998 | Cardiff | 1 | 1 | Slight |
| Sat 7 Nov 1998 | Cardiff | 1 | 1 | Slight |
| Tue 10 Nov 1998 | Cardiff | 1 | 1 | Slight |
| Thu 12 Nov 1998 | Cardiff | 2 | 1 | Slight |
| Mon 16 Nov 1998 | Cardiff | 2 | 1 | Slight |
| Mon 23 Nov 1998 | Cardiff | 1 | 1 | Slight |
| Thu 26 Nov 1998 | Cardiff | 3 | 1 | Slight |
| Wed 2 Dec 1998 | Cardiff | 2 | 1 | Slight |
| Thu 10 Dec 1998 | Cardiff | 2 | 3 | Slight |
| Thu 17 Dec 1998 | Cardiff | 2 | 1 | Slight |
| Sat 19 Dec 1998 | Cardiff | 4 | 3 | Slight |