Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 4 Jan 1999 | Monmouthshire | 1 | 1 | Slight |
| Sat 9 Jan 1999 | Neath Port Talbot | 1 | 1 | Serious |
| Sat 9 Jan 1999 | Neath Port Talbot | 2 | 3 | Slight |
| Mon 11 Jan 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Mon 11 Jan 1999 | Neath Port Talbot | 1 | 1 | Slight |
| Thu 14 Jan 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Mon 18 Jan 1999 | Merthyr Tydfil | 1 | 1 | Slight |
| Wed 20 Jan 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Mon 25 Jan 1999 | Monmouthshire | 4 | 1 | Slight |
| Thu 28 Jan 1999 | Monmouthshire | 3 | 3 | Slight |
| Sat 30 Jan 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sat 30 Jan 1999 | Herefordshire, County of | 1 | 1 | Serious |
| Wed 3 Feb 1999 | Monmouthshire | 2 | 2 | Slight |
| Mon 8 Feb 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Wed 10 Feb 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Fri 19 Feb 1999 | Herefordshire, County of | 2 | 3 | Slight |
| Fri 19 Feb 1999 | Blaenau Gwent | 2 | 1 | Slight |
| Sat 27 Feb 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Tue 2 Mar 1999 | Blaenau Gwent | 3 | 1 | Slight |
| Tue 2 Mar 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Wed 10 Mar 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Wed 17 Mar 1999 | Neath Port Talbot | 1 | 1 | Serious |
| Fri 19 Mar 1999 | Monmouthshire | 2 | 1 | Serious |
| Fri 19 Mar 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sun 21 Mar 1999 | Neath Port Talbot | 1 | 1 | Slight |
| Sun 21 Mar 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Tue 23 Mar 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Tue 23 Mar 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Wed 24 Mar 1999 | Neath Port Talbot | 2 | 2 | Slight |
| Sat 27 Mar 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Thu 8 Apr 1999 | Blaenau Gwent | 1 | 1 | Serious |
| Sun 11 Apr 1999 | Herefordshire, County of | 3 | 1 | Serious |
| Wed 14 Apr 1999 | Monmouthshire | 2 | 1 | Slight |
| Wed 14 Apr 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Fri 16 Apr 1999 | Blaenau Gwent | 1 | 5 | Fatal |
| Thu 22 Apr 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Fri 23 Apr 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Fri 30 Apr 1999 | Monmouthshire | 3 | 2 | Slight |
| Wed 5 May 1999 | Blaenau Gwent | 2 | 1 | Slight |
| Fri 7 May 1999 | Monmouthshire | 2 | 1 | Slight |
| Fri 7 May 1999 | Monmouthshire | 3 | 3 | Slight |
| Sat 8 May 1999 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Tue 11 May 1999 | Monmouthshire | 1 | 1 | Slight |
| Thu 13 May 1999 | Herefordshire, County of | 3 | 2 | Slight |
| Sun 16 May 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Thu 20 May 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Fri 28 May 1999 | Blaenau Gwent | 2 | 1 | Slight |
| Sat 29 May 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Sun 30 May 1999 | Merthyr Tydfil | 1 | 2 | Slight |
| Tue 1 Jun 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Tue 8 Jun 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Wed 9 Jun 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Fri 11 Jun 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Fri 11 Jun 1999 | Caerphilly | 2 | 4 | Serious |
| Tue 22 Jun 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sat 26 Jun 1999 | Caerphilly | 2 | 7 | Fatal |
| Mon 28 Jun 1999 | Neath Port Talbot | 1 | 2 | Serious |
| Tue 29 Jun 1999 | Merthyr Tydfil | 3 | 3 | Serious |
| Thu 1 Jul 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Thu 1 Jul 1999 | Monmouthshire | 1 | 1 | Slight |
| Fri 2 Jul 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Sat 3 Jul 1999 | Herefordshire, County of | 2 | 2 | Fatal |
| Sun 4 Jul 1999 | Monmouthshire | 1 | 1 | Slight |
| Tue 6 Jul 1999 | Monmouthshire | 1 | 1 | Slight |
| Sat 10 Jul 1999 | Merthyr Tydfil | 2 | 2 | Slight |
| Mon 12 Jul 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Wed 14 Jul 1999 | Herefordshire, County of | 2 | 4 | Serious |
| Wed 14 Jul 1999 | Caerphilly | 2 | 2 | Slight |
| Fri 16 Jul 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Tue 20 Jul 1999 | Rhondda, Cynon, Taff | 2 | 2 | Fatal |
| Mon 2 Aug 1999 | Herefordshire, County of | 1 | 1 | Fatal |
| Tue 3 Aug 1999 | Merthyr Tydfil | 3 | 4 | Serious |
| Tue 3 Aug 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Wed 4 Aug 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Fri 6 Aug 1999 | Blaenau Gwent | 2 | 2 | Slight |
| Sat 7 Aug 1999 | Neath Port Talbot | 1 | 2 | Slight |
| Sun 8 Aug 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Mon 9 Aug 1999 | Neath Port Talbot | 2 | 2 | Slight |
| Tue 10 Aug 1999 | Herefordshire, County of | 2 | 3 | Serious |
| Fri 13 Aug 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sat 14 Aug 1999 | Monmouthshire | 3 | 1 | Slight |
| Sat 14 Aug 1999 | Monmouthshire | 2 | 2 | Slight |
| Sat 14 Aug 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Sun 15 Aug 1999 | Rhondda, Cynon, Taff | 1 | 1 | Slight |
| Sat 21 Aug 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sat 21 Aug 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Sat 21 Aug 1999 | Merthyr Tydfil | 1 | 6 | Slight |
| Mon 30 Aug 1999 | Monmouthshire | 2 | 1 | Slight |
| Wed 1 Sep 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Thu 2 Sep 1999 | Herefordshire, County of | 2 | 2 | Slight |
| Wed 8 Sep 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Mon 13 Sep 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Tue 14 Sep 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Tue 14 Sep 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Wed 15 Sep 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Thu 16 Sep 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Thu 16 Sep 1999 | Caerphilly | 2 | 1 | Slight |
| Mon 20 Sep 1999 | Monmouthshire | 2 | 1 | Slight |
| Tue 21 Sep 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Thu 23 Sep 1999 | Herefordshire, County of | 4 | 1 | Serious |
| Fri 24 Sep 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Sat 25 Sep 1999 | Herefordshire, County of | 2 | 5 | Serious |
| Mon 27 Sep 1999 | Merthyr Tydfil | 3 | 1 | Slight |
| Mon 27 Sep 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Tue 28 Sep 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Thu 30 Sep 1999 | Rhondda, Cynon, Taff | 2 | 1 | Slight |
| Sat 2 Oct 1999 | Blaenau Gwent | 1 | 2 | Slight |
| Tue 5 Oct 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Thu 7 Oct 1999 | Neath Port Talbot | 3 | 2 | Slight |
| Thu 7 Oct 1999 | Neath Port Talbot | 7 | 7 | Slight |
| Thu 7 Oct 1999 | Neath Port Talbot | 4 | 2 | Serious |
| Sat 9 Oct 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Wed 13 Oct 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Wed 13 Oct 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Wed 27 Oct 1999 | Herefordshire, County of | 2 | 1 | Fatal |
| Wed 27 Oct 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Wed 27 Oct 1999 | Herefordshire, County of | 2 | 1 | Serious |
| Fri 29 Oct 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Sat 30 Oct 1999 | Monmouthshire | 2 | 2 | Slight |
| Sat 30 Oct 1999 | Neath Port Talbot | 2 | 1 | Slight |
| Sat 30 Oct 1999 | Neath Port Talbot | 1 | 1 | Slight |
| Thu 4 Nov 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Wed 10 Nov 1999 | Herefordshire, County of | 1 | 1 | Slight |
| Wed 10 Nov 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Fri 12 Nov 1999 | Blaenau Gwent | 2 | 3 | Slight |
| Wed 17 Nov 1999 | Monmouthshire | 1 | 1 | Slight |
| Thu 18 Nov 1999 | Blaenau Gwent | 3 | 3 | Slight |
| Sat 20 Nov 1999 | Merthyr Tydfil | 2 | 2 | Slight |
| Sat 20 Nov 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sun 21 Nov 1999 | Merthyr Tydfil | 3 | 2 | Slight |
| Fri 26 Nov 1999 | Herefordshire, County of | 2 | 3 | Slight |
| Mon 29 Nov 1999 | Neath Port Talbot | 2 | 2 | Slight |
| Thu 2 Dec 1999 | Blaenau Gwent | 2 | 3 | Slight |
| Fri 3 Dec 1999 | Monmouthshire | 2 | 1 | Slight |
| Wed 8 Dec 1999 | Neath Port Talbot | 1 | 1 | Slight |
| Wed 8 Dec 1999 | Monmouthshire | 2 | 1 | Slight |
| Sat 11 Dec 1999 | Caerphilly | 2 | 1 | Slight |
| Mon 13 Dec 1999 | Blaenau Gwent | 2 | 2 | Slight |
| Mon 13 Dec 1999 | Monmouthshire | 2 | 1 | Slight |
| Tue 14 Dec 1999 | Herefordshire, County of | 2 | 1 | Slight |
| Sat 18 Dec 1999 | Merthyr Tydfil | 2 | 1 | Slight |
| Mon 20 Dec 1999 | Herefordshire, County of | 1 | 3 | Slight |
| Thu 23 Dec 1999 | Herefordshire, County of | 3 | 1 | Serious |
| Thu 30 Dec 1999 | Herefordshire, County of | 1 | 1 | Serious |