Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 14 Jan 2012 | Cardiff | 2 | 2 | Slight |
| Mon 16 Jan 2012 | Forest of Dean | 2 | 1 | Slight |
| Tue 17 Jan 2012 | Cardiff | 2 | 1 | Slight |
| Thu 19 Jan 2012 | Cardiff | 2 | 2 | Slight |
| Fri 20 Jan 2012 | Cardiff | 2 | 1 | Slight |
| Fri 20 Jan 2012 | Cardiff | 2 | 2 | Slight |
| Fri 20 Jan 2012 | Swansea | 3 | 2 | Slight |
| Fri 20 Jan 2012 | Cardiff | 3 | 2 | Slight |
| Wed 25 Jan 2012 | Cardiff | 2 | 2 | Slight |
| Thu 26 Jan 2012 | Carmarthenshire | 5 | 4 | Slight |
| Fri 27 Jan 2012 | The Vale of Glamorgan | 3 | 2 | Slight |
| Fri 27 Jan 2012 | Carmarthenshire | 2 | 1 | Slight |
| Sat 28 Jan 2012 | Swansea | 2 | 5 | Serious |
| Fri 3 Feb 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Fri 3 Feb 2012 | Carmarthenshire | 2 | 2 | Slight |
| Sun 5 Feb 2012 | Newport | 2 | 1 | Slight |
| Mon 6 Feb 2012 | Cardiff | 2 | 1 | Slight |
| Mon 6 Feb 2012 | Neath Port Talbot | 3 | 2 | Slight |
| Mon 6 Feb 2012 | Newport | 2 | 1 | Slight |
| Tue 7 Feb 2012 | Cardiff | 2 | 1 | Slight |
| Tue 7 Feb 2012 | Tewkesbury | 3 | 1 | Slight |
| Wed 8 Feb 2012 | Cardiff | 2 | 2 | Slight |
| Fri 17 Feb 2012 | Monmouthshire | 2 | 2 | Slight |
| Sat 18 Feb 2012 | Neath Port Talbot | 3 | 2 | Slight |
| Wed 22 Feb 2012 | Newport | 2 | 1 | Slight |
| Wed 22 Feb 2012 | Newport | 5 | 2 | Slight |
| Sat 25 Feb 2012 | Newport | 2 | 1 | Slight |
| Sat 25 Feb 2012 | Forest of Dean | 3 | 1 | Serious |
| Tue 28 Feb 2012 | Cardiff | 1 | 3 | Slight |
| Wed 29 Feb 2012 | Carmarthenshire | 2 | 1 | Slight |
| Thu 1 Mar 2012 | Cardiff | 2 | 1 | Slight |
| Sat 3 Mar 2012 | Carmarthenshire | 2 | 3 | Slight |
| Mon 5 Mar 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Tue 6 Mar 2012 | Cardiff | 2 | 1 | Slight |
| Tue 6 Mar 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Wed 7 Mar 2012 | Neath Port Talbot | 3 | 2 | Slight |
| Wed 7 Mar 2012 | Forest of Dean | 2 | 1 | Slight |
| Thu 8 Mar 2012 | Bridgend | 2 | 1 | Slight |
| Fri 9 Mar 2012 | Carmarthenshire | 2 | 2 | Slight |
| Sun 11 Mar 2012 | The Vale of Glamorgan | 4 | 3 | Slight |
| Mon 12 Mar 2012 | Carmarthenshire | 2 | 1 | Slight |
| Tue 13 Mar 2012 | Cardiff | 1 | 1 | Serious |
| Thu 15 Mar 2012 | Carmarthenshire | 2 | 1 | Slight |
| Fri 16 Mar 2012 | Carmarthenshire | 3 | 2 | Slight |
| Mon 19 Mar 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Mon 19 Mar 2012 | Neath Port Talbot | 2 | 2 | Slight |
| Mon 19 Mar 2012 | Monmouthshire | 1 | 1 | Slight |
| Tue 20 Mar 2012 | Forest of Dean | 2 | 1 | Slight |
| Tue 20 Mar 2012 | Forest of Dean | 3 | 1 | Slight |
| Tue 20 Mar 2012 | Monmouthshire | 2 | 1 | Slight |
| Wed 21 Mar 2012 | Swansea | 2 | 1 | Slight |
| Wed 21 Mar 2012 | Newport | 2 | 1 | Slight |
| Thu 22 Mar 2012 | Carmarthenshire | 2 | 3 | Serious |
| Fri 23 Mar 2012 | Cardiff | 2 | 1 | Slight |
| Fri 23 Mar 2012 | Monmouthshire | 2 | 1 | Slight |
| Sun 25 Mar 2012 | Newport | 1 | 1 | Slight |
| Mon 26 Mar 2012 | Cardiff | 2 | 3 | Slight |
| Mon 26 Mar 2012 | Swansea | 2 | 1 | Slight |
| Tue 27 Mar 2012 | Carmarthenshire | 2 | 2 | Slight |
| Fri 30 Mar 2012 | Newport | 2 | 1 | Serious |
| Sun 1 Apr 2012 | Carmarthenshire | 2 | 1 | Slight |
| Sun 8 Apr 2012 | Swansea | 2 | 1 | Slight |
| Tue 10 Apr 2012 | Monmouthshire | 2 | 1 | Slight |
| Wed 11 Apr 2012 | Forest of Dean | 1 | 1 | Slight |
| Sun 15 Apr 2012 | Bridgend | 2 | 1 | Slight |
| Mon 16 Apr 2012 | Cardiff | 2 | 1 | Slight |
| Mon 16 Apr 2012 | Newport | 2 | 1 | Slight |
| Sat 21 Apr 2012 | Cardiff | 2 | 1 | Slight |
| Tue 24 Apr 2012 | Carmarthenshire | 1 | 2 | Slight |
| Wed 25 Apr 2012 | Carmarthenshire | 1 | 1 | Slight |
| Thu 26 Apr 2012 | The Vale of Glamorgan | 2 | 2 | Slight |
| Sun 29 Apr 2012 | Cardiff | 2 | 2 | Slight |
| Wed 2 May 2012 | Cardiff | 2 | 1 | Slight |
| Mon 7 May 2012 | Cardiff | 4 | 2 | Slight |
| Tue 8 May 2012 | Forest of Dean | 1 | 1 | Slight |
| Thu 10 May 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Sat 12 May 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Mon 14 May 2012 | Swansea | 2 | 1 | Slight |
| Tue 15 May 2012 | Swansea | 2 | 2 | Slight |
| Tue 15 May 2012 | Forest of Dean | 3 | 1 | Serious |
| Thu 17 May 2012 | Neath Port Talbot | 2 | 2 | Slight |
| Fri 18 May 2012 | Carmarthenshire | 2 | 2 | Slight |
| Sun 20 May 2012 | Bridgend | 1 | 2 | Slight |
| Wed 23 May 2012 | Cardiff | 2 | 3 | Slight |
| Thu 24 May 2012 | Bridgend | 2 | 1 | Slight |
| Fri 25 May 2012 | Cardiff | 3 | 1 | Slight |
| Fri 25 May 2012 | Carmarthenshire | 2 | 1 | Slight |
| Sat 26 May 2012 | Bridgend | 2 | 1 | Slight |
| Sat 26 May 2012 | Cardiff | 1 | 1 | Slight |
| Sun 27 May 2012 | Cardiff | 2 | 1 | Slight |
| Mon 28 May 2012 | Forest of Dean | 2 | 1 | Slight |
| Mon 28 May 2012 | Forest of Dean | 2 | 1 | Slight |
| Mon 28 May 2012 | Newport | 2 | 4 | Slight |
| Mon 28 May 2012 | Tewkesbury | 2 | 1 | Slight |
| Tue 29 May 2012 | Carmarthenshire | 1 | 1 | Slight |
| Fri 1 Jun 2012 | Bridgend | 2 | 1 | Slight |
| Sat 2 Jun 2012 | Carmarthenshire | 1 | 1 | Serious |
| Sun 3 Jun 2012 | Bridgend | 2 | 1 | Slight |
| Mon 4 Jun 2012 | Carmarthenshire | 1 | 1 | Slight |
| Wed 6 Jun 2012 | Neath Port Talbot | 3 | 6 | Slight |
| Thu 7 Jun 2012 | Neath Port Talbot | 3 | 3 | Slight |
| Fri 8 Jun 2012 | Forest of Dean | 1 | 1 | Serious |
| Fri 8 Jun 2012 | Cardiff | 2 | 2 | Slight |
| Fri 8 Jun 2012 | Carmarthenshire | 2 | 2 | Slight |
| Sat 9 Jun 2012 | Monmouthshire | 2 | 3 | Slight |
| Sat 16 Jun 2012 | Swansea | 2 | 1 | Slight |
| Sun 17 Jun 2012 | The Vale of Glamorgan | 1 | 1 | Serious |
| Mon 18 Jun 2012 | Cardiff | 2 | 1 | Serious |
| Mon 18 Jun 2012 | The Vale of Glamorgan | 3 | 3 | Slight |
| Mon 18 Jun 2012 | Pembrokeshire | 2 | 1 | Slight |
| Tue 19 Jun 2012 | Carmarthenshire | 2 | 1 | Slight |
| Wed 20 Jun 2012 | Bridgend | 2 | 2 | Slight |
| Wed 20 Jun 2012 | Carmarthenshire | 1 | 1 | Slight |
| Fri 22 Jun 2012 | Cardiff | 2 | 1 | Slight |
| Sat 23 Jun 2012 | Carmarthenshire | 1 | 1 | Slight |
| Tue 26 Jun 2012 | Cardiff | 4 | 4 | Slight |
| Tue 26 Jun 2012 | Swansea | 2 | 1 | Slight |
| Tue 26 Jun 2012 | Forest of Dean | 2 | 1 | Slight |
| Tue 3 Jul 2012 | Tewkesbury | 2 | 1 | Slight |
| Wed 4 Jul 2012 | Cardiff | 2 | 1 | Slight |
| Thu 5 Jul 2012 | Neath Port Talbot | 1 | 1 | Slight |
| Sun 8 Jul 2012 | Forest of Dean | 1 | 1 | Slight |
| Mon 9 Jul 2012 | Cardiff | 1 | 1 | Slight |
| Mon 9 Jul 2012 | Monmouthshire | 2 | 2 | Slight |
| Wed 11 Jul 2012 | Monmouthshire | 2 | 1 | Slight |
| Fri 13 Jul 2012 | Newport | 2 | 1 | Slight |
| Sun 15 Jul 2012 | Newport | 1 | 4 | Slight |
| Tue 17 Jul 2012 | Cardiff | 4 | 1 | Slight |
| Wed 18 Jul 2012 | The Vale of Glamorgan | 1 | 1 | Slight |
| Wed 18 Jul 2012 | Cardiff | 4 | 1 | Slight |
| Wed 18 Jul 2012 | Carmarthenshire | 1 | 1 | Slight |
| Fri 20 Jul 2012 | Neath Port Talbot | 3 | 1 | Slight |
| Sun 22 Jul 2012 | Newport | 2 | 2 | Slight |
| Mon 23 Jul 2012 | Newport | 1 | 1 | Slight |
| Mon 23 Jul 2012 | Carmarthenshire | 2 | 3 | Slight |
| Mon 23 Jul 2012 | Newport | 2 | 1 | Slight |
| Tue 31 Jul 2012 | Newport | 2 | 1 | Slight |
| Wed 1 Aug 2012 | Carmarthenshire | 1 | 1 | Serious |
| Thu 2 Aug 2012 | Swansea | 2 | 1 | Slight |
| Fri 3 Aug 2012 | Monmouthshire | 2 | 3 | Serious |
| Sun 5 Aug 2012 | Forest of Dean | 1 | 1 | Serious |
| Tue 7 Aug 2012 | Neath Port Talbot | 2 | 3 | Slight |
| Tue 7 Aug 2012 | Newport | 2 | 1 | Slight |
| Wed 8 Aug 2012 | Newport | 2 | 1 | Fatal |
| Sat 11 Aug 2012 | Bridgend | 1 | 1 | Slight |
| Sat 11 Aug 2012 | Cardiff | 2 | 1 | Slight |
| Sat 11 Aug 2012 | Cardiff | 2 | 3 | Slight |
| Sun 12 Aug 2012 | Carmarthenshire | 2 | 5 | Slight |
| Tue 14 Aug 2012 | Bridgend | 1 | 1 | Slight |
| Wed 15 Aug 2012 | The Vale of Glamorgan | 1 | 1 | Slight |
| Thu 16 Aug 2012 | Cardiff | 1 | 2 | Slight |
| Fri 17 Aug 2012 | Cardiff | 2 | 2 | Slight |
| Thu 23 Aug 2012 | Cardiff | 2 | 1 | Slight |
| Fri 24 Aug 2012 | Carmarthenshire | 1 | 1 | Slight |
| Sun 2 Sep 2012 | Cardiff | 1 | 1 | Slight |
| Sun 2 Sep 2012 | Carmarthenshire | 2 | 2 | Slight |
| Mon 3 Sep 2012 | Newport | 2 | 1 | Slight |
| Mon 3 Sep 2012 | Newport | 2 | 2 | Slight |
| Wed 5 Sep 2012 | Forest of Dean | 2 | 1 | Slight |
| Wed 5 Sep 2012 | Forest of Dean | 4 | 2 | Slight |
| Wed 5 Sep 2012 | Forest of Dean | 4 | 2 | Slight |
| Thu 6 Sep 2012 | Cardiff | 2 | 1 | Slight |
| Sat 8 Sep 2012 | Forest of Dean | 3 | 3 | Serious |
| Sun 9 Sep 2012 | Newport | 2 | 1 | Slight |
| Sun 9 Sep 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Mon 10 Sep 2012 | Cardiff | 2 | 1 | Slight |
| Mon 10 Sep 2012 | Bridgend | 1 | 1 | Serious |
| Wed 12 Sep 2012 | Carmarthenshire | 2 | 1 | Slight |
| Thu 13 Sep 2012 | Tewkesbury | 2 | 2 | Serious |
| Sat 15 Sep 2012 | Forest of Dean | 2 | 1 | Slight |
| Mon 17 Sep 2012 | Carmarthenshire | 2 | 1 | Slight |
| Tue 18 Sep 2012 | Cardiff | 2 | 1 | Slight |
| Tue 18 Sep 2012 | Newport | 2 | 1 | Slight |
| Thu 20 Sep 2012 | Neath Port Talbot | 2 | 1 | Slight |
| Fri 21 Sep 2012 | Carmarthenshire | 2 | 1 | Slight |
| Sat 22 Sep 2012 | Forest of Dean | 1 | 1 | Fatal |
| Fri 28 Sep 2012 | Newport | 3 | 1 | Serious |
| Sat 29 Sep 2012 | Cardiff | 1 | 1 | Slight |
| Mon 1 Oct 2012 | Carmarthenshire | 1 | 1 | Slight |
| Tue 2 Oct 2012 | Cardiff | 2 | 3 | Slight |
| Wed 3 Oct 2012 | Newport | 3 | 1 | Slight |
| Thu 4 Oct 2012 | Carmarthenshire | 2 | 6 | Serious |
| Sat 6 Oct 2012 | Newport | 2 | 1 | Slight |
| Sun 7 Oct 2012 | Carmarthenshire | 2 | 1 | Serious |
| Sun 7 Oct 2012 | Newport | 2 | 2 | Slight |
| Mon 8 Oct 2012 | Neath Port Talbot | 2 | 2 | Slight |
| Tue 9 Oct 2012 | Neath Port Talbot | 3 | 1 | Slight |
| Thu 11 Oct 2012 | Newport | 2 | 2 | Slight |
| Thu 11 Oct 2012 | Bridgend | 1 | 2 | Slight |
| Thu 11 Oct 2012 | Carmarthenshire | 1 | 2 | Slight |
| Fri 12 Oct 2012 | Cardiff | 1 | 1 | Slight |
| Sat 13 Oct 2012 | Carmarthenshire | 3 | 1 | Slight |
| Tue 16 Oct 2012 | The Vale of Glamorgan | 2 | 3 | Slight |
| Wed 17 Oct 2012 | Neath Port Talbot | 2 | 4 | Slight |
| Sat 20 Oct 2012 | Monmouthshire | 2 | 1 | Slight |
| Sat 20 Oct 2012 | Carmarthenshire | 2 | 1 | Slight |
| Wed 24 Oct 2012 | Carmarthenshire | 2 | 1 | Slight |
| Sat 27 Oct 2012 | Cardiff | 1 | 1 | Serious |
| Sat 27 Oct 2012 | The Vale of Glamorgan | 2 | 2 | Slight |
| Wed 31 Oct 2012 | Carmarthenshire | 2 | 2 | Slight |
| Sat 3 Nov 2012 | Swansea | 1 | 3 | Slight |
| Sun 4 Nov 2012 | Neath Port Talbot | 2 | 2 | Slight |
| Mon 5 Nov 2012 | Newport | 2 | 1 | Slight |
| Tue 6 Nov 2012 | Bridgend | 1 | 3 | Serious |
| Wed 7 Nov 2012 | Newport | 2 | 1 | Slight |
| Wed 7 Nov 2012 | Forest of Dean | 1 | 1 | Slight |
| Fri 9 Nov 2012 | Newport | 1 | 1 | Slight |
| Fri 9 Nov 2012 | Cardiff | 2 | 1 | Slight |
| Sun 11 Nov 2012 | Bridgend | 2 | 1 | Serious |
| Fri 16 Nov 2012 | Forest of Dean | 1 | 2 | Slight |
| Mon 19 Nov 2012 | Newport | 2 | 1 | Slight |
| Tue 20 Nov 2012 | The Vale of Glamorgan | 1 | 1 | Slight |
| Tue 20 Nov 2012 | The Vale of Glamorgan | 2 | 1 | Slight |
| Fri 23 Nov 2012 | Cardiff | 1 | 1 | Slight |
| Mon 26 Nov 2012 | Cardiff | 3 | 1 | Slight |
| Tue 27 Nov 2012 | Monmouthshire | 2 | 1 | Slight |
| Tue 27 Nov 2012 | Swansea | 2 | 1 | Slight |
| Thu 29 Nov 2012 | Forest of Dean | 2 | 1 | Serious |
| Sun 2 Dec 2012 | Forest of Dean | 2 | 4 | Slight |
| Mon 3 Dec 2012 | Cardiff | 2 | 1 | Slight |
| Wed 5 Dec 2012 | Carmarthenshire | 3 | 4 | Slight |
| Wed 5 Dec 2012 | Carmarthenshire | 2 | 3 | Slight |
| Wed 5 Dec 2012 | Cardiff | 2 | 1 | Slight |
| Sun 9 Dec 2012 | Cardiff | 3 | 1 | Serious |
| Tue 11 Dec 2012 | Cardiff | 2 | 1 | Slight |
| Tue 11 Dec 2012 | Swansea | 1 | 1 | Slight |
| Sun 16 Dec 2012 | Carmarthenshire | 2 | 1 | Slight |
| Tue 18 Dec 2012 | Bridgend | 2 | 8 | Slight |
| Wed 19 Dec 2012 | Newport | 2 | 1 | Slight |
| Sat 22 Dec 2012 | Carmarthenshire | 2 | 1 | Slight |
| Wed 26 Dec 2012 | The Vale of Glamorgan | 3 | 1 | Slight |
| Wed 26 Dec 2012 | Cardiff | 2 | 2 | Slight |
| Thu 27 Dec 2012 | Carmarthenshire | 2 | 2 | Slight |
| Mon 31 Dec 2012 | Cardiff | 1 | 1 | Slight |