Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 10 Jan 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sun 11 Jan 1998 | Rhondda, Cynon, Taff | 2 | 4 | Serious |
| Mon 26 Jan 1998 | Bridgend | 2 | 1 | Slight |
| Tue 27 Jan 1998 | Bridgend | 2 | 2 | Slight |
| Tue 3 Feb 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Fri 13 Feb 1998 | Bridgend | 2 | 1 | Slight |
| Thu 19 Feb 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Fri 20 Feb 1998 | Bridgend | 2 | 1 | Slight |
| Sat 14 Mar 1998 | Rhondda, Cynon, Taff | 4 | 2 | Slight |
| Thu 19 Mar 1998 | Bridgend | 2 | 2 | Slight |
| Wed 25 Mar 1998 | Bridgend | 2 | 1 | Slight |
| Fri 27 Mar 1998 | Bridgend | 2 | 2 | Slight |
| Mon 30 Mar 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Thu 2 Apr 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Fri 3 Apr 1998 | Bridgend | 1 | 1 | Fatal |
| Sun 5 Apr 1998 | Rhondda, Cynon, Taff | 1 | 2 | Slight |
| Sun 12 Apr 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sun 19 Apr 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Thu 23 Apr 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Sat 2 May 1998 | Rhondda, Cynon, Taff | 1 | 1 | Serious |
| Thu 21 May 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Fri 5 Jun 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sat 6 Jun 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sat 6 Jun 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Fri 12 Jun 1998 | Bridgend | 3 | 2 | Slight |
| Sat 13 Jun 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sun 14 Jun 1998 | Bridgend | 1 | 1 | Slight |
| Mon 15 Jun 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Mon 15 Jun 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Thu 18 Jun 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Sat 20 Jun 1998 | Bridgend | 2 | 1 | Slight |
| Sun 21 Jun 1998 | Bridgend | 2 | 1 | Slight |
| Tue 23 Jun 1998 | Bridgend | 1 | 1 | Slight |
| Sat 27 Jun 1998 | Bridgend | 1 | 1 | Slight |
| Sun 5 Jul 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Wed 8 Jul 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Mon 13 Jul 1998 | Bridgend | 2 | 1 | Slight |
| Wed 15 Jul 1998 | Bridgend | 2 | 1 | Slight |
| Wed 22 Jul 1998 | Bridgend | 2 | 1 | Slight |
| Sat 1 Aug 1998 | Bridgend | 2 | 1 | Slight |
| Thu 6 Aug 1998 | Bridgend | 2 | 1 | Slight |
| Sat 8 Aug 1998 | Rhondda, Cynon, Taff | 2 | 3 | Slight |
| Mon 17 Aug 1998 | Bridgend | 1 | 1 | Slight |
| Thu 20 Aug 1998 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Mon 24 Aug 1998 | Bridgend | 2 | 1 | Slight |
| Tue 8 Sep 1998 | Bridgend | 2 | 1 | Slight |
| Sat 19 Sep 1998 | Bridgend | 1 | 3 | Slight |
| Sun 20 Sep 1998 | Bridgend | 2 | 4 | Slight |
| Tue 29 Sep 1998 | Bridgend | 2 | 1 | Slight |
| Sat 3 Oct 1998 | Rhondda, Cynon, Taff | 1 | 1 | Fatal |
| Fri 9 Oct 1998 | Bridgend | 3 | 2 | Slight |
| Fri 9 Oct 1998 | Bridgend | 1 | 2 | Slight |
| Fri 16 Oct 1998 | Rhondda, Cynon, Taff | 3 | 1 | Slight |
| Sat 17 Oct 1998 | Plymouth | 1 | 1 | Slight |
| Mon 19 Oct 1998 | Bridgend | 1 | 1 | Slight |
| Wed 21 Oct 1998 | Rhondda, Cynon, Taff | 2 | 2 | Slight |
| Sat 31 Oct 1998 | Bridgend | 4 | 1 | Slight |
| Fri 6 Nov 1998 | Bridgend | 2 | 1 | Slight |
| Sun 8 Nov 1998 | Bridgend | 1 | 1 | Fatal |
| Wed 11 Nov 1998 | Bridgend | 1 | 1 | Slight |
| Thu 26 Nov 1998 | Bridgend | 1 | 1 | Slight |
| Thu 26 Nov 1998 | Rhondda, Cynon, Taff | 2 | 3 | Slight |
| Wed 2 Dec 1998 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Fri 4 Dec 1998 | Bridgend | 2 | 2 | Fatal |
| Fri 11 Dec 1998 | Bridgend | 2 | 1 | Slight |
| Mon 28 Dec 1998 | Bridgend | 1 | 1 | Slight |