Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 5 Jan 1998 | Caerphilly | 2 | 1 | Slight |
| Mon 5 Jan 1998 | Newport | 2 | 1 | Slight |
| Mon 12 Jan 1998 | Caerphilly | 2 | 1 | Slight |
| Fri 16 Jan 1998 | Blaenau Gwent | 3 | 2 | Slight |
| Tue 3 Feb 1998 | Caerphilly | 2 | 1 | Slight |
| Sat 7 Feb 1998 | Newport | 2 | 1 | Slight |
| Mon 9 Feb 1998 | Newport | 2 | 1 | Slight |
| Tue 10 Feb 1998 | Newport | 2 | 1 | Slight |
| Tue 10 Feb 1998 | Newport | 2 | 1 | Slight |
| Sun 22 Feb 1998 | Caerphilly | 2 | 1 | Slight |
| Sun 8 Mar 1998 | Newport | 2 | 1 | Slight |
| Wed 18 Mar 1998 | Caerphilly | 1 | 1 | Slight |
| Thu 16 Apr 1998 | Caerphilly | 1 | 1 | Serious |
| Sat 18 Apr 1998 | Newport | 1 | 3 | Slight |
| Mon 20 Apr 1998 | Caerphilly | 2 | 1 | Slight |
| Mon 20 Apr 1998 | Blaenau Gwent | 3 | 1 | Slight |
| Tue 21 Apr 1998 | Caerphilly | 4 | 7 | Slight |
| Fri 24 Apr 1998 | Newport | 1 | 1 | Slight |
| Fri 24 Apr 1998 | Newport | 1 | 1 | Slight |
| Mon 27 Apr 1998 | Blaenau Gwent | 3 | 4 | Serious |
| Sun 10 May 1998 | Blaenau Gwent | 2 | 1 | Slight |
| Mon 18 May 1998 | Caerphilly | 2 | 1 | Slight |
| Fri 5 Jun 1998 | Blaenau Gwent | 2 | 2 | Slight |
| Sun 7 Jun 1998 | Caerphilly | 2 | 1 | Slight |
| Sun 21 Jun 1998 | Newport | 1 | 1 | Slight |
| Sun 21 Jun 1998 | Newport | 2 | 1 | Slight |
| Mon 22 Jun 1998 | Newport | 3 | 1 | Slight |
| Wed 24 Jun 1998 | Caerphilly | 2 | 1 | Slight |
| Sat 27 Jun 1998 | Newport | 2 | 1 | Slight |
| Fri 3 Jul 1998 | Newport | 2 | 1 | Slight |
| Mon 6 Jul 1998 | Newport | 2 | 1 | Slight |
| Tue 7 Jul 1998 | Newport | 2 | 1 | Slight |
| Mon 20 Jul 1998 | Caerphilly | 2 | 1 | Slight |
| Thu 6 Aug 1998 | Newport | 3 | 1 | Slight |
| Fri 7 Aug 1998 | Newport | 1 | 1 | Slight |
| Sat 8 Aug 1998 | Caerphilly | 2 | 1 | Slight |
| Sat 8 Aug 1998 | Blaenau Gwent | 1 | 1 | Slight |
| Sat 8 Aug 1998 | Blaenau Gwent | 2 | 1 | Slight |
| Mon 10 Aug 1998 | Blaenau Gwent | 3 | 1 | Slight |
| Fri 21 Aug 1998 | Caerphilly | 1 | 1 | Slight |
| Sat 22 Aug 1998 | Caerphilly | 2 | 1 | Serious |
| Mon 24 Aug 1998 | Blaenau Gwent | 2 | 1 | Slight |
| Wed 2 Sep 1998 | Newport | 2 | 1 | Slight |
| Thu 3 Sep 1998 | Newport | 2 | 2 | Slight |
| Sat 5 Sep 1998 | Blaenau Gwent | 2 | 1 | Slight |
| Tue 8 Sep 1998 | Caerphilly | 2 | 2 | Slight |
| Tue 8 Sep 1998 | Caerphilly | 2 | 1 | Slight |
| Mon 12 Oct 1998 | Blaenau Gwent | 3 | 1 | Slight |
| Mon 12 Oct 1998 | Blaenau Gwent | 2 | 1 | Slight |
| Fri 23 Oct 1998 | Blaenau Gwent | 3 | 1 | Slight |
| Wed 4 Nov 1998 | Newport | 2 | 1 | Slight |
| Sat 21 Nov 1998 | Newport | 2 | 1 | Slight |
| Mon 23 Nov 1998 | Newport | 2 | 2 | Slight |
| Mon 23 Nov 1998 | Newport | 3 | 1 | Slight |
| Tue 24 Nov 1998 | Blaenau Gwent | 3 | 1 | Slight |
| Mon 30 Nov 1998 | Caerphilly | 2 | 11 | Serious |
| Wed 2 Dec 1998 | Caerphilly | 2 | 1 | Slight |
| Thu 3 Dec 1998 | Newport | 1 | 1 | Slight |
| Sat 5 Dec 1998 | Newport | 2 | 1 | Slight |
| Tue 8 Dec 1998 | Newport | 3 | 1 | Slight |
| Sat 12 Dec 1998 | Newport | 2 | 1 | Slight |
| Thu 17 Dec 1998 | Caerphilly | 2 | 1 | Slight |
| Fri 25 Dec 1998 | Caerphilly | 2 | 1 | Slight |