Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 8 Jan 1999 | Conwy | 2 | 1 | Slight |
| Fri 8 Jan 1999 | Denbighshire | 2 | 1 | Slight |
| Mon 11 Jan 1999 | Denbighshire | 2 | 1 | Serious |
| Tue 12 Jan 1999 | Conwy | 1 | 1 | Slight |
| Fri 15 Jan 1999 | Conwy | 1 | 1 | Slight |
| Thu 21 Jan 1999 | Conwy | 2 | 2 | Slight |
| Thu 21 Jan 1999 | Conwy | 2 | 1 | Slight |
| Fri 22 Jan 1999 | Denbighshire | 2 | 1 | Slight |
| Sun 24 Jan 1999 | Denbighshire | 2 | 1 | Slight |
| Sun 24 Jan 1999 | Conwy | 1 | 1 | Slight |
| Tue 26 Jan 1999 | Denbighshire | 3 | 1 | Slight |
| Tue 9 Feb 1999 | Conwy | 2 | 1 | Slight |
| Wed 17 Feb 1999 | Denbighshire | 2 | 2 | Slight |
| Fri 19 Feb 1999 | Conwy | 1 | 1 | Slight |
| Tue 23 Feb 1999 | Conwy | 3 | 1 | Slight |
| Tue 2 Mar 1999 | Denbighshire | 2 | 3 | Slight |
| Fri 5 Mar 1999 | Denbighshire | 2 | 2 | Slight |
| Sun 7 Mar 1999 | Conwy | 2 | 1 | Slight |
| Tue 9 Mar 1999 | Denbighshire | 2 | 1 | Slight |
| Wed 10 Mar 1999 | Denbighshire | 2 | 3 | Slight |
| Sat 13 Mar 1999 | Conwy | 2 | 1 | Slight |
| Mon 22 Mar 1999 | Conwy | 2 | 3 | Serious |
| Tue 30 Mar 1999 | Denbighshire | 3 | 1 | Serious |
| Thu 1 Apr 1999 | Conwy | 2 | 1 | Slight |
| Thu 1 Apr 1999 | Conwy | 2 | 2 | Slight |
| Sun 4 Apr 1999 | Denbighshire | 2 | 3 | Slight |
| Sun 4 Apr 1999 | Conwy | 2 | 1 | Slight |
| Sun 4 Apr 1999 | Conwy | 2 | 1 | Slight |
| Wed 14 Apr 1999 | Conwy | 1 | 1 | Slight |
| Thu 15 Apr 1999 | Denbighshire | 2 | 1 | Slight |
| Sat 17 Apr 1999 | Conwy | 1 | 1 | Slight |
| Mon 26 Apr 1999 | Denbighshire | 2 | 1 | Slight |
| Sat 1 May 1999 | Conwy | 3 | 3 | Slight |
| Mon 3 May 1999 | Conwy | 2 | 1 | Slight |
| Fri 7 May 1999 | Conwy | 1 | 1 | Serious |
| Mon 10 May 1999 | Denbighshire | 2 | 2 | Slight |
| Thu 13 May 1999 | Conwy | 1 | 1 | Slight |
| Tue 18 May 1999 | Conwy | 1 | 1 | Serious |
| Sat 22 May 1999 | Conwy | 1 | 1 | Slight |
| Mon 24 May 1999 | Denbighshire | 2 | 1 | Serious |
| Fri 28 May 1999 | Conwy | 1 | 1 | Slight |
| Sat 29 May 1999 | Conwy | 1 | 1 | Slight |
| Sat 5 Jun 1999 | Conwy | 2 | 1 | Slight |
| Sun 6 Jun 1999 | Conwy | 1 | 1 | Slight |
| Wed 9 Jun 1999 | Conwy | 1 | 1 | Slight |
| Sun 13 Jun 1999 | Conwy | 2 | 1 | Slight |
| Fri 18 Jun 1999 | Denbighshire | 2 | 4 | Slight |
| Wed 30 Jun 1999 | Denbighshire | 1 | 1 | Slight |
| Sat 3 Jul 1999 | Denbighshire | 2 | 1 | Slight |
| Thu 15 Jul 1999 | Denbighshire | 2 | 1 | Slight |
| Thu 15 Jul 1999 | Denbighshire | 2 | 1 | Slight |
| Sat 17 Jul 1999 | Denbighshire | 2 | 1 | Slight |
| Tue 20 Jul 1999 | Conwy | 2 | 1 | Slight |
| Wed 21 Jul 1999 | Conwy | 2 | 2 | Slight |
| Thu 22 Jul 1999 | Conwy | 2 | 1 | Slight |
| Fri 23 Jul 1999 | Conwy | 2 | 1 | Slight |
| Fri 23 Jul 1999 | Conwy | 2 | 3 | Slight |
| Sun 1 Aug 1999 | Denbighshire | 2 | 3 | Slight |
| Sun 1 Aug 1999 | Conwy | 2 | 1 | Slight |
| Thu 5 Aug 1999 | Conwy | 1 | 1 | Serious |
| Thu 5 Aug 1999 | Conwy | 2 | 1 | Slight |
| Sat 7 Aug 1999 | Conwy | 2 | 4 | Slight |
| Sat 7 Aug 1999 | Conwy | 2 | 4 | Slight |
| Mon 9 Aug 1999 | Conwy | 2 | 2 | Slight |
| Tue 17 Aug 1999 | Denbighshire | 2 | 1 | Slight |
| Tue 17 Aug 1999 | Conwy | 2 | 1 | Slight |
| Sun 22 Aug 1999 | Denbighshire | 2 | 1 | Slight |
| Wed 25 Aug 1999 | Conwy | 1 | 2 | Slight |
| Thu 26 Aug 1999 | Conwy | 2 | 1 | Slight |
| Fri 27 Aug 1999 | Conwy | 2 | 1 | Slight |
| Sun 5 Sep 1999 | Denbighshire | 3 | 1 | Slight |
| Sat 18 Sep 1999 | Denbighshire | 2 | 1 | Slight |
| Tue 21 Sep 1999 | Conwy | 2 | 1 | Slight |
| Sat 25 Sep 1999 | Denbighshire | 2 | 1 | Slight |
| Wed 29 Sep 1999 | Conwy | 2 | 2 | Slight |
| Thu 30 Sep 1999 | Conwy | 1 | 1 | Slight |
| Thu 30 Sep 1999 | Conwy | 1 | 1 | Slight |
| Fri 1 Oct 1999 | Denbighshire | 3 | 1 | Slight |
| Thu 7 Oct 1999 | Denbighshire | 2 | 1 | Slight |
| Wed 13 Oct 1999 | Denbighshire | 2 | 1 | Fatal |
| Wed 13 Oct 1999 | Conwy | 2 | 1 | Slight |
| Sun 17 Oct 1999 | Denbighshire | 3 | 1 | Slight |
| Sat 23 Oct 1999 | Denbighshire | 2 | 1 | Slight |
| Sat 23 Oct 1999 | Conwy | 3 | 1 | Slight |
| Thu 28 Oct 1999 | Denbighshire | 5 | 1 | Slight |
| Sat 30 Oct 1999 | Conwy | 2 | 1 | Slight |
| Mon 1 Nov 1999 | Conwy | 2 | 3 | Slight |
| Sat 6 Nov 1999 | Conwy | 1 | 1 | Serious |
| Mon 15 Nov 1999 | Conwy | 2 | 1 | Slight |
| Sat 20 Nov 1999 | Denbighshire | 1 | 1 | Slight |
| Thu 9 Dec 1999 | Conwy | 2 | 1 | Slight |
| Fri 10 Dec 1999 | Conwy | 1 | 1 | Slight |
| Fri 17 Dec 1999 | Conwy | 2 | 3 | Slight |
| Sat 18 Dec 1999 | Conwy | 2 | 2 | Slight |
| Sun 19 Dec 1999 | Conwy | 2 | 3 | Serious |
| Wed 22 Dec 1999 | Denbighshire | 3 | 2 | Slight |
| Thu 23 Dec 1999 | Conwy | 1 | 1 | Slight |
| Thu 23 Dec 1999 | Conwy | 1 | 1 | Slight |