Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 1 Jan 1999 | Burnley | 1 | 1 | Slight |
| Sat 2 Jan 1999 | Calderdale | 2 | 2 | Slight |
| Thu 7 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Fri 8 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Fri 8 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Fri 8 Jan 1999 | Calderdale | 2 | 2 | Slight |
| Sat 16 Jan 1999 | Burnley | 2 | 2 | Slight |
| Sun 17 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Sat 23 Jan 1999 | Calderdale | 1 | 1 | Slight |
| Wed 27 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Fri 29 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Fri 29 Jan 1999 | Calderdale | 1 | 1 | Slight |
| Sat 30 Jan 1999 | Calderdale | 2 | 1 | Slight |
| Sat 6 Feb 1999 | Calderdale | 1 | 4 | Serious |
| Sat 6 Feb 1999 | Calderdale | 3 | 2 | Slight |
| Sat 6 Feb 1999 | Calderdale | 1 | 1 | Slight |
| Tue 9 Feb 1999 | Calderdale | 2 | 2 | Slight |
| Fri 12 Feb 1999 | Calderdale | 2 | 1 | Slight |
| Wed 17 Feb 1999 | Burnley | 2 | 3 | Slight |
| Wed 17 Feb 1999 | Calderdale | 2 | 1 | Slight |
| Fri 19 Feb 1999 | Calderdale | 1 | 2 | Fatal |
| Thu 25 Feb 1999 | Calderdale | 2 | 2 | Slight |
| Thu 25 Feb 1999 | Calderdale | 2 | 1 | Slight |
| Mon 1 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Tue 2 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Thu 11 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Thu 11 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Fri 12 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Fri 19 Mar 1999 | Calderdale | 2 | 1 | Serious |
| Fri 19 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Sat 20 Mar 1999 | Calderdale | 2 | 1 | Slight |
| Tue 23 Mar 1999 | Calderdale | 2 | 2 | Slight |
| Sat 3 Apr 1999 | Calderdale | 2 | 2 | Serious |
| Sun 4 Apr 1999 | Calderdale | 2 | 4 | Slight |
| Thu 8 Apr 1999 | Calderdale | 2 | 1 | Slight |
| Sun 11 Apr 1999 | Calderdale | 3 | 3 | Slight |
| Wed 14 Apr 1999 | Calderdale | 2 | 1 | Slight |
| Fri 16 Apr 1999 | Calderdale | 2 | 1 | Slight |
| Mon 19 Apr 1999 | Calderdale | 3 | 2 | Slight |
| Thu 22 Apr 1999 | Burnley | 2 | 1 | Slight |
| Fri 23 Apr 1999 | Calderdale | 1 | 2 | Serious |
| Sun 2 May 1999 | Calderdale | 3 | 1 | Slight |
| Mon 10 May 1999 | Burnley | 2 | 1 | Slight |
| Wed 12 May 1999 | Calderdale | 3 | 2 | Slight |
| Wed 12 May 1999 | Burnley | 2 | 1 | Slight |
| Fri 21 May 1999 | Burnley | 2 | 1 | Slight |
| Thu 27 May 1999 | Calderdale | 1 | 1 | Serious |
| Fri 28 May 1999 | Calderdale | 3 | 2 | Slight |
| Sat 29 May 1999 | Calderdale | 2 | 1 | Slight |
| Mon 31 May 1999 | Calderdale | 1 | 1 | Slight |
| Thu 3 Jun 1999 | Calderdale | 2 | 2 | Slight |
| Sat 5 Jun 1999 | Calderdale | 1 | 1 | Slight |
| Tue 8 Jun 1999 | Calderdale | 1 | 2 | Slight |
| Sat 12 Jun 1999 | Calderdale | 2 | 1 | Serious |
| Sat 19 Jun 1999 | Calderdale | 1 | 1 | Serious |
| Mon 21 Jun 1999 | Calderdale | 2 | 1 | Slight |
| Wed 23 Jun 1999 | Calderdale | 2 | 1 | Slight |
| Thu 24 Jun 1999 | Calderdale | 2 | 2 | Slight |
| Sat 26 Jun 1999 | Calderdale | 1 | 1 | Slight |
| Tue 29 Jun 1999 | Burnley | 1 | 1 | Serious |
| Wed 30 Jun 1999 | Calderdale | 2 | 1 | Slight |
| Sat 3 Jul 1999 | Calderdale | 1 | 1 | Slight |
| Thu 15 Jul 1999 | Calderdale | 3 | 1 | Slight |
| Thu 15 Jul 1999 | Calderdale | 2 | 3 | Slight |
| Mon 19 Jul 1999 | Calderdale | 4 | 1 | Slight |
| Tue 27 Jul 1999 | Calderdale | 2 | 1 | Slight |
| Thu 29 Jul 1999 | Calderdale | 2 | 1 | Slight |
| Sat 31 Jul 1999 | Calderdale | 1 | 5 | Serious |
| Sat 31 Jul 1999 | Calderdale | 1 | 1 | Slight |
| Fri 13 Aug 1999 | Burnley | 1 | 1 | Slight |
| Sat 14 Aug 1999 | Calderdale | 2 | 1 | Slight |
| Sat 14 Aug 1999 | Calderdale | 2 | 3 | Serious |
| Mon 16 Aug 1999 | Burnley | 1 | 1 | Serious |
| Tue 17 Aug 1999 | Calderdale | 4 | 1 | Slight |
| Tue 17 Aug 1999 | Calderdale | 1 | 1 | Slight |
| Tue 17 Aug 1999 | Calderdale | 2 | 1 | Slight |
| Sat 21 Aug 1999 | Calderdale | 2 | 2 | Slight |
| Thu 26 Aug 1999 | Calderdale | 1 | 1 | Slight |
| Sat 28 Aug 1999 | Calderdale | 2 | 1 | Slight |
| Fri 3 Sep 1999 | Calderdale | 2 | 1 | Slight |
| Sun 5 Sep 1999 | Calderdale | 2 | 2 | Serious |
| Sun 5 Sep 1999 | Burnley | 1 | 1 | Serious |
| Sun 5 Sep 1999 | Calderdale | 1 | 1 | Slight |
| Thu 9 Sep 1999 | Calderdale | 2 | 2 | Slight |
| Fri 10 Sep 1999 | Calderdale | 1 | 1 | Slight |
| Sat 11 Sep 1999 | Calderdale | 4 | 1 | Slight |
| Sat 11 Sep 1999 | Calderdale | 3 | 1 | Slight |
| Fri 17 Sep 1999 | Calderdale | 2 | 2 | Serious |
| Sat 18 Sep 1999 | Calderdale | 2 | 1 | Slight |
| Thu 23 Sep 1999 | Calderdale | 1 | 1 | Slight |
| Thu 23 Sep 1999 | Burnley | 2 | 1 | Serious |
| Mon 27 Sep 1999 | Calderdale | 3 | 1 | Slight |
| Mon 27 Sep 1999 | Burnley | 2 | 2 | Slight |
| Sat 2 Oct 1999 | Calderdale | 2 | 3 | Slight |
| Fri 8 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Fri 8 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Mon 11 Oct 1999 | Calderdale | 1 | 1 | Slight |
| Sun 17 Oct 1999 | Burnley | 1 | 1 | Slight |
| Thu 21 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Fri 29 Oct 1999 | Calderdale | 1 | 1 | Slight |
| Fri 29 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Fri 29 Oct 1999 | Calderdale | 1 | 1 | Slight |
| Sat 30 Oct 1999 | Burnley | 1 | 1 | Fatal |
| Sat 30 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Sat 30 Oct 1999 | Calderdale | 2 | 1 | Slight |
| Mon 1 Nov 1999 | Calderdale | 3 | 1 | Slight |
| Mon 1 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Mon 1 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Fri 5 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Sat 6 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Mon 8 Nov 1999 | Calderdale | 1 | 1 | Slight |
| Tue 9 Nov 1999 | Calderdale | 2 | 2 | Slight |
| Wed 10 Nov 1999 | Calderdale | 1 | 1 | Slight |
| Wed 10 Nov 1999 | Calderdale | 3 | 1 | Slight |
| Sun 14 Nov 1999 | Calderdale | 2 | 2 | Slight |
| Tue 16 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Thu 18 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Fri 19 Nov 1999 | Calderdale | 1 | 1 | Slight |
| Sun 21 Nov 1999 | Calderdale | 1 | 1 | Slight |
| Tue 23 Nov 1999 | Calderdale | 3 | 1 | Slight |
| Tue 23 Nov 1999 | Calderdale | 2 | 1 | Slight |
| Wed 24 Nov 1999 | Calderdale | 3 | 1 | Slight |
| Fri 3 Dec 1999 | Calderdale | 2 | 1 | Slight |
| Mon 6 Dec 1999 | Calderdale | 3 | 1 | Slight |
| Thu 9 Dec 1999 | Calderdale | 2 | 1 | Slight |
| Mon 13 Dec 1999 | Calderdale | 2 | 1 | Slight |
| Fri 17 Dec 1999 | Calderdale | 2 | 1 | Slight |
| Sat 18 Dec 1999 | Calderdale | 2 | 1 | Slight |
| Sun 19 Dec 1999 | Calderdale | 1 | 1 | Slight |
| Wed 29 Dec 1999 | Calderdale | 4 | 5 | Slight |