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